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Finding the Fourth Proportional to 8,411.69, 12,617.54 and 2,865.62

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Solution

The fourth proportional to 8,411.69, 12,617.54 and 2,865.62 is: 4,298.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,411.69 : 12,617.54 = 2,865.62 : x
  2. Step 2: Convert to fraction form
    8,411.69/12,617.54 = 2,865.62/x
  3. Step 3: Cross multiply
    8,411.69x = 12,617.54 × 2,865.62
  4. Step 4: Simplify right side
    8,411.69x = 36,157,074.97
  5. Step 5: Solve for x
    x = 36,157,074.97/8,411.69
  6. Step 6: Final answer
    x = 4,298.43

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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.