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Finding the Fourth Proportional to 8,760.92, 13,143.11 and 3,214.31

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Solution

The fourth proportional to 8,760.92, 13,143.11 and 3,214.31 is: 4,822.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760.92 : 13,143.11 = 3,214.31 : x
  2. Step 2: Convert to fraction form
    8,760.92/13,143.11 = 3,214.31/x
  3. Step 3: Cross multiply
    8,760.92x = 13,143.11 × 3,214.31
  4. Step 4: Simplify right side
    8,760.92x = 42,245,980.97
  5. Step 5: Solve for x
    x = 42,245,980.97/8,760.92
  6. Step 6: Final answer
    x = 4,822.10

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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.