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Finding the Fourth Proportional to 8,487.48, 12,731.22 and 3,559.44

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Solution

The fourth proportional to 8,487.48, 12,731.22 and 3,559.44 is: 5,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.48 : 12,731.22 = 3,559.44 : x
  2. Step 2: Convert to fraction form
    8,487.48/12,731.22 = 3,559.44/x
  3. Step 3: Cross multiply
    8,487.48x = 12,731.22 × 3,559.44
  4. Step 4: Simplify right side
    8,487.48x = 45,316,013.72
  5. Step 5: Solve for x
    x = 45,316,013.72/8,487.48
  6. Step 6: Final answer
    x = 5,339.16

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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.