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Finding the Fourth Proportional to 6,959.67, 10,447.20 and 3,671.88

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Solution

The fourth proportional to 6,959.67, 10,447.20 and 3,671.88 is: 5,511.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,959.67 : 10,447.20 = 3,671.88 : x
  2. Step 2: Convert to fraction form
    6,959.67/10,447.20 = 3,671.88/x
  3. Step 3: Cross multiply
    6,959.67x = 10,447.20 × 3,671.88
  4. Step 4: Simplify right side
    6,959.67x = 38,360,864.74
  5. Step 5: Solve for x
    x = 38,360,864.74/6,959.67
  6. Step 6: Final answer
    x = 5,511.88

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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.