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Finding the Fourth Proportional to 2,487.06, 3,730.07 and 755.30

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Solution

The fourth proportional to 2,487.06, 3,730.07 and 755.30 is: 1,132.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.06 : 3,730.07 = 755.30 : x
  2. Step 2: Convert to fraction form
    2,487.06/3,730.07 = 755.30/x
  3. Step 3: Cross multiply
    2,487.06x = 3,730.07 × 755.30
  4. Step 4: Simplify right side
    2,487.06x = 2,817,321.87
  5. Step 5: Solve for x
    x = 2,817,321.87/2,487.06
  6. Step 6: Final answer
    x = 1,132.79

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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.