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Finding the Fourth Proportional to 3,649.59, 5,479.11 and 3,132.95

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Solution

The fourth proportional to 3,649.59, 5,479.11 and 3,132.95 is: 4,703.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,649.59 : 5,479.11 = 3,132.95 : x
  2. Step 2: Convert to fraction form
    3,649.59/5,479.11 = 3,132.95/x
  3. Step 3: Cross multiply
    3,649.59x = 5,479.11 × 3,132.95
  4. Step 4: Simplify right side
    3,649.59x = 17,165,750.28
  5. Step 5: Solve for x
    x = 17,165,750.28/3,649.59
  6. Step 6: Final answer
    x = 4,703.47

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1.5x scale

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.