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Finding the Fourth Proportional to 10,642.80, 15,958.30 and 4,937.55

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Solution

The fourth proportional to 10,642.80, 15,958.30 and 4,937.55 is: 7,403.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,642.80 : 15,958.30 = 4,937.55 : x
  2. Step 2: Convert to fraction form
    10,642.80/15,958.30 = 4,937.55/x
  3. Step 3: Cross multiply
    10,642.80x = 15,958.30 × 4,937.55
  4. Step 4: Simplify right side
    10,642.80x = 78,794,904.17
  5. Step 5: Solve for x
    x = 78,794,904.17/10,642.80
  6. Step 6: Final answer
    x = 7,403.59

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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.