Home / 2,634.09-3,951.15-686.13

Finding the Fourth Proportional to 2,634.09, 3,951.15 and 686.13

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Solution

The fourth proportional to 2,634.09, 3,951.15 and 686.13 is: 1,029.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,634.09 : 3,951.15 = 686.13 : x
  2. Step 2: Convert to fraction form
    2,634.09/3,951.15 = 686.13/x
  3. Step 3: Cross multiply
    2,634.09x = 3,951.15 × 686.13
  4. Step 4: Simplify right side
    2,634.09x = 2,711,002.55
  5. Step 5: Solve for x
    x = 2,711,002.55/2,634.09
  6. Step 6: Final answer
    x = 1,029.20

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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.