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Finding the Fourth Proportional to 2,535.43, 3,803.15 and 686.55

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Solution

The fourth proportional to 2,535.43, 3,803.15 and 686.55 is: 1,029.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,535.43 : 3,803.15 = 686.55 : x
  2. Step 2: Convert to fraction form
    2,535.43/3,803.15 = 686.55/x
  3. Step 3: Cross multiply
    2,535.43x = 3,803.15 × 686.55
  4. Step 4: Simplify right side
    2,535.43x = 2,611,049.20
  5. Step 5: Solve for x
    x = 2,611,049.20/2,535.43
  6. Step 6: Final answer
    x = 1,029.83

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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.