Home / 8,731.40-13,100.34-3,540.92

Finding the Fourth Proportional to 8,731.40, 13,100.34 and 3,540.92

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Solution

The fourth proportional to 8,731.40, 13,100.34 and 3,540.92 is: 5,312.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.40 : 13,100.34 = 3,540.92 : x
  2. Step 2: Convert to fraction form
    8,731.40/13,100.34 = 3,540.92/x
  3. Step 3: Cross multiply
    8,731.40x = 13,100.34 × 3,540.92
  4. Step 4: Simplify right side
    8,731.40x = 46,387,255.91
  5. Step 5: Solve for x
    x = 46,387,255.91/8,731.40
  6. Step 6: Final answer
    x = 5,312.69

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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.