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Finding the Fourth Proportional to 8,642.88, 12,962.16 and 3,445.92

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Solution

The fourth proportional to 8,642.88, 12,962.16 and 3,445.92 is: 5,168.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.88 : 12,962.16 = 3,445.92 : x
  2. Step 2: Convert to fraction form
    8,642.88/12,962.16 = 3,445.92/x
  3. Step 3: Cross multiply
    8,642.88x = 12,962.16 × 3,445.92
  4. Step 4: Simplify right side
    8,642.88x = 44,666,566.39
  5. Step 5: Solve for x
    x = 44,666,566.39/8,642.88
  6. Step 6: Final answer
    x = 5,168.02

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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.