Home / 9,708.90-13,398.28-5,517.15

Finding the Fourth Proportional to 9,708.90, 13,398.28 and 5,517.15

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Solution

The fourth proportional to 9,708.90, 13,398.28 and 5,517.15 is: 7,613.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,708.90 : 13,398.28 = 5,517.15 : x
  2. Step 2: Convert to fraction form
    9,708.90/13,398.28 = 5,517.15/x
  3. Step 3: Cross multiply
    9,708.90x = 13,398.28 × 5,517.15
  4. Step 4: Simplify right side
    9,708.90x = 73,920,256.47
  5. Step 5: Solve for x
    x = 73,920,256.47/9,708.90
  6. Step 6: Final answer
    x = 7,613.66

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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.