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Finding the Fourth Proportional to 2,488.59, 3,732.89 and 928.53

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Solution

The fourth proportional to 2,488.59, 3,732.89 and 928.53 is: 1,392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,488.59 : 3,732.89 = 928.53 : x
  2. Step 2: Convert to fraction form
    2,488.59/3,732.89 = 928.53/x
  3. Step 3: Cross multiply
    2,488.59x = 3,732.89 × 928.53
  4. Step 4: Simplify right side
    2,488.59x = 3,466,095.71
  5. Step 5: Solve for x
    x = 3,466,095.71/2,488.59
  6. Step 6: Final answer
    x = 1,392.80

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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.