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Finding the Fourth Proportional to 6,872.52, 10,315.26 and 3,587.88

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Solution

The fourth proportional to 6,872.52, 10,315.26 and 3,587.88 is: 5,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.52 : 10,315.26 = 3,587.88 : x
  2. Step 2: Convert to fraction form
    6,872.52/10,315.26 = 3,587.88/x
  3. Step 3: Cross multiply
    6,872.52x = 10,315.26 × 3,587.88
  4. Step 4: Simplify right side
    6,872.52x = 37,009,915.05
  5. Step 5: Solve for x
    x = 37,009,915.05/6,872.52
  6. Step 6: Final answer
    x = 5,385.20

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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.