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Finding the Fourth Proportional to 1,625.12, 2,437.92 and 760.16

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Solution

The fourth proportional to 1,625.12, 2,437.92 and 760.16 is: 1,140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.12 : 2,437.92 = 760.16 : x
  2. Step 2: Convert to fraction form
    1,625.12/2,437.92 = 760.16/x
  3. Step 3: Cross multiply
    1,625.12x = 2,437.92 × 760.16
  4. Step 4: Simplify right side
    1,625.12x = 1,853,209.27
  5. Step 5: Solve for x
    x = 1,853,209.27/1,625.12
  6. Step 6: Final answer
    x = 1,140.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.