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Finding the Fourth Proportional to 8,399.52, 11,578.92 and 5,374.32

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Solution

The fourth proportional to 8,399.52, 11,578.92 and 5,374.32 is: 7,408.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399.52 : 11,578.92 = 5,374.32 : x
  2. Step 2: Convert to fraction form
    8,399.52/11,578.92 = 5,374.32/x
  3. Step 3: Cross multiply
    8,399.52x = 11,578.92 × 5,374.32
  4. Step 4: Simplify right side
    8,399.52x = 62,228,821.33
  5. Step 5: Solve for x
    x = 62,228,821.33/8,399.52
  6. Step 6: Final answer
    x = 7,408.62

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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.