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Finding the Fourth Proportional to 3,720.80, 5,133.17 and 2,462.47

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Solution

The fourth proportional to 3,720.80, 5,133.17 and 2,462.47 is: 3,397.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.80 : 5,133.17 = 2,462.47 : x
  2. Step 2: Convert to fraction form
    3,720.80/5,133.17 = 2,462.47/x
  3. Step 3: Cross multiply
    3,720.80x = 5,133.17 × 2,462.47
  4. Step 4: Simplify right side
    3,720.80x = 12,640,270.45
  5. Step 5: Solve for x
    x = 12,640,270.45/3,720.80
  6. Step 6: Final answer
    x = 3,397.19

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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.