Home / 2,487.65-3,432.78-1,425.29

Finding the Fourth Proportional to 2,487.65, 3,432.78 and 1,425.29

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Solution

The fourth proportional to 2,487.65, 3,432.78 and 1,425.29 is: 1,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.65 : 3,432.78 = 1,425.29 : x
  2. Step 2: Convert to fraction form
    2,487.65/3,432.78 = 1,425.29/x
  3. Step 3: Cross multiply
    2,487.65x = 3,432.78 × 1,425.29
  4. Step 4: Simplify right side
    2,487.65x = 4,892,689.84
  5. Step 5: Solve for x
    x = 4,892,689.84/2,487.65
  6. Step 6: Final answer
    x = 1,966.80

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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.