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Finding the Fourth Proportional to 8,487.64, 12,708.37 and 4,972.44

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Solution

The fourth proportional to 8,487.64, 12,708.37 and 4,972.44 is: 7,445.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.64 : 12,708.37 = 4,972.44 : x
  2. Step 2: Convert to fraction form
    8,487.64/12,708.37 = 4,972.44/x
  3. Step 3: Cross multiply
    8,487.64x = 12,708.37 × 4,972.44
  4. Step 4: Simplify right side
    8,487.64x = 63,191,607.32
  5. Step 5: Solve for x
    x = 63,191,607.32/8,487.64
  6. Step 6: Final answer
    x = 7,445.13

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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.