Home / 8,278.22-11,425.11-5,135.42

Finding the Fourth Proportional to 8,278.22, 11,425.11 and 5,135.42

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Solution

The fourth proportional to 8,278.22, 11,425.11 and 5,135.42 is: 7,087.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.22 : 11,425.11 = 5,135.42 : x
  2. Step 2: Convert to fraction form
    8,278.22/11,425.11 = 5,135.42/x
  3. Step 3: Cross multiply
    8,278.22x = 11,425.11 × 5,135.42
  4. Step 4: Simplify right side
    8,278.22x = 58,672,738.40
  5. Step 5: Solve for x
    x = 58,672,738.40/8,278.22
  6. Step 6: Final answer
    x = 7,087.60

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Half scale
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Double scale
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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.