Home / 9,712.68-13,402.62-5,520.12

Finding the Fourth Proportional to 9,712.68, 13,402.62 and 5,520.12

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Solution

The fourth proportional to 9,712.68, 13,402.62 and 5,520.12 is: 7,617.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,712.68 : 13,402.62 = 5,520.12 : x
  2. Step 2: Convert to fraction form
    9,712.68/13,402.62 = 5,520.12/x
  3. Step 3: Cross multiply
    9,712.68x = 13,402.62 × 5,520.12
  4. Step 4: Simplify right side
    9,712.68x = 73,984,070.71
  5. Step 5: Solve for x
    x = 73,984,070.71/9,712.68
  6. Step 6: Final answer
    x = 7,617.27

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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.