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Finding the Fourth Proportional to 8,374.16, 11,553.97 and 5,391.72

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Solution

The fourth proportional to 8,374.16, 11,553.97 and 5,391.72 is: 7,439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374.16 : 11,553.97 = 5,391.72 : x
  2. Step 2: Convert to fraction form
    8,374.16/11,553.97 = 5,391.72/x
  3. Step 3: Cross multiply
    8,374.16x = 11,553.97 × 5,391.72
  4. Step 4: Simplify right side
    8,374.16x = 62,295,771.13
  5. Step 5: Solve for x
    x = 62,295,771.13/8,374.16
  6. Step 6: Final answer
    x = 7,439.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.