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Finding the Fourth Proportional to 8,358.72, 12,546.90 and 8,170.44

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Solution

The fourth proportional to 8,358.72, 12,546.90 and 8,170.44 is: 12,264.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.72 : 12,546.90 = 8,170.44 : x
  2. Step 2: Convert to fraction form
    8,358.72/12,546.90 = 8,170.44/x
  3. Step 3: Cross multiply
    8,358.72x = 12,546.90 × 8,170.44
  4. Step 4: Simplify right side
    8,358.72x = 102,513,693.64
  5. Step 5: Solve for x
    x = 102,513,693.64/8,358.72
  6. Step 6: Final answer
    x = 12,264.28

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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.