Home / 8,691.41-13,029.32-3,143.45

Finding the Fourth Proportional to 8,691.41, 13,029.32 and 3,143.45

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Solution

The fourth proportional to 8,691.41, 13,029.32 and 3,143.45 is: 4,712.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.41 : 13,029.32 = 3,143.45 : x
  2. Step 2: Convert to fraction form
    8,691.41/13,029.32 = 3,143.45/x
  3. Step 3: Cross multiply
    8,691.41x = 13,029.32 × 3,143.45
  4. Step 4: Simplify right side
    8,691.41x = 40,957,056.39
  5. Step 5: Solve for x
    x = 40,957,056.39/8,691.41
  6. Step 6: Final answer
    x = 4,712.36

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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.