Home / 8,787.18-12,126.60-5,249.91

Finding the Fourth Proportional to 8,787.18, 12,126.60 and 5,249.91

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Solution

The fourth proportional to 8,787.18, 12,126.60 and 5,249.91 is: 7,245.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.18 : 12,126.60 = 5,249.91 : x
  2. Step 2: Convert to fraction form
    8,787.18/12,126.60 = 5,249.91/x
  3. Step 3: Cross multiply
    8,787.18x = 12,126.60 × 5,249.91
  4. Step 4: Simplify right side
    8,787.18x = 63,663,558.61
  5. Step 5: Solve for x
    x = 63,663,558.61/8,787.18
  6. Step 6: Final answer
    x = 7,245.05

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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.