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Finding the Fourth Proportional to 8,381.90, 12,574.92 and 5,921.54

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Solution

The fourth proportional to 8,381.90, 12,574.92 and 5,921.54 is: 8,883.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.90 : 12,574.92 = 5,921.54 : x
  2. Step 2: Convert to fraction form
    8,381.90/12,574.92 = 5,921.54/x
  3. Step 3: Cross multiply
    8,381.90x = 12,574.92 × 5,921.54
  4. Step 4: Simplify right side
    8,381.90x = 74,462,891.78
  5. Step 5: Solve for x
    x = 74,462,891.78/8,381.90
  6. Step 6: Final answer
    x = 8,883.77

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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.