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Finding the Fourth Proportional to 5,854.61, 8,781.92 and 2,391.86

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Solution

The fourth proportional to 5,854.61, 8,781.92 and 2,391.86 is: 3,587.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,854.61 : 8,781.92 = 2,391.86 : x
  2. Step 2: Convert to fraction form
    5,854.61/8,781.92 = 2,391.86/x
  3. Step 3: Cross multiply
    5,854.61x = 8,781.92 × 2,391.86
  4. Step 4: Simplify right side
    5,854.61x = 21,005,129.15
  5. Step 5: Solve for x
    x = 21,005,129.15/5,854.61
  6. Step 6: Final answer
    x = 3,587.79

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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.