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Finding the Fourth Proportional to 2,487.68, 3,432.84 and 2,248.64

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Solution

The fourth proportional to 2,487.68, 3,432.84 and 2,248.64 is: 3,102.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.68 : 3,432.84 = 2,248.64 : x
  2. Step 2: Convert to fraction form
    2,487.68/3,432.84 = 2,248.64/x
  3. Step 3: Cross multiply
    2,487.68x = 3,432.84 × 2,248.64
  4. Step 4: Simplify right side
    2,487.68x = 7,719,221.34
  5. Step 5: Solve for x
    x = 7,719,221.34/2,487.68
  6. Step 6: Final answer
    x = 3,102.98

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1.5x scale

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.