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Finding the Fourth Proportional to 4,874.74, 7,312.98 and 1,587.88

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Solution

The fourth proportional to 4,874.74, 7,312.98 and 1,587.88 is: 2,382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,874.74 : 7,312.98 = 1,587.88 : x
  2. Step 2: Convert to fraction form
    4,874.74/7,312.98 = 1,587.88/x
  3. Step 3: Cross multiply
    4,874.74x = 7,312.98 × 1,587.88
  4. Step 4: Simplify right side
    4,874.74x = 11,612,134.68
  5. Step 5: Solve for x
    x = 11,612,134.68/4,874.74
  6. Step 6: Final answer
    x = 2,382.10

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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.