Home / 9,165.12-12,645.76-5,185.38

Finding the Fourth Proportional to 9,165.12, 12,645.76 and 5,185.38

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Solution

The fourth proportional to 9,165.12, 12,645.76 and 5,185.38 is: 7,154.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.12 : 12,645.76 = 5,185.38 : x
  2. Step 2: Convert to fraction form
    9,165.12/12,645.76 = 5,185.38/x
  3. Step 3: Cross multiply
    9,165.12x = 12,645.76 × 5,185.38
  4. Step 4: Simplify right side
    9,165.12x = 65,573,070.99
  5. Step 5: Solve for x
    x = 65,573,070.99/9,165.12
  6. Step 6: Final answer
    x = 7,154.63

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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.