Home / 8,897.36-12,278.76-5,170.64

Finding the Fourth Proportional to 8,897.36, 12,278.76 and 5,170.64

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Solution

The fourth proportional to 8,897.36, 12,278.76 and 5,170.64 is: 7,135.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,897.36 : 12,278.76 = 5,170.64 : x
  2. Step 2: Convert to fraction form
    8,897.36/12,278.76 = 5,170.64/x
  3. Step 3: Cross multiply
    8,897.36x = 12,278.76 × 5,170.64
  4. Step 4: Simplify right side
    8,897.36x = 63,489,047.61
  5. Step 5: Solve for x
    x = 63,489,047.61/8,897.36
  6. Step 6: Final answer
    x = 7,135.72

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Find fourth proportional to 4,448.68, 6,139.38 and 2,585.32
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.