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Finding the Fourth Proportional to 6,642.50, 9,957.06 and 4,179.08

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Solution

The fourth proportional to 6,642.50, 9,957.06 and 4,179.08 is: 6,264.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.50 : 9,957.06 = 4,179.08 : x
  2. Step 2: Convert to fraction form
    6,642.50/9,957.06 = 4,179.08/x
  3. Step 3: Cross multiply
    6,642.50x = 9,957.06 × 4,179.08
  4. Step 4: Simplify right side
    6,642.50x = 41,611,350.30
  5. Step 5: Solve for x
    x = 41,611,350.30/6,642.50
  6. Step 6: Final answer
    x = 6,264.41

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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.