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Finding the Fourth Proportional to 8,343.92, 12,515.88 and 3,412.70

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Solution

The fourth proportional to 8,343.92, 12,515.88 and 3,412.70 is: 5,119.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,343.92 : 12,515.88 = 3,412.70 : x
  2. Step 2: Convert to fraction form
    8,343.92/12,515.88 = 3,412.70/x
  3. Step 3: Cross multiply
    8,343.92x = 12,515.88 × 3,412.70
  4. Step 4: Simplify right side
    8,343.92x = 42,712,943.68
  5. Step 5: Solve for x
    x = 42,712,943.68/8,343.92
  6. Step 6: Final answer
    x = 5,119.05

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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.