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Finding the Fourth Proportional to 2,487.11, 3,730.57 and 638.24

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Solution

The fourth proportional to 2,487.11, 3,730.57 and 638.24 is: 957.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.11 : 3,730.57 = 638.24 : x
  2. Step 2: Convert to fraction form
    2,487.11/3,730.57 = 638.24/x
  3. Step 3: Cross multiply
    2,487.11x = 3,730.57 × 638.24
  4. Step 4: Simplify right side
    2,487.11x = 2,380,999.00
  5. Step 5: Solve for x
    x = 2,380,999.00/2,487.11
  6. Step 6: Final answer
    x = 957.34

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1.5x scale

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.