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Finding the Fourth Proportional to 3,959.74, 5,454.30 and 3,329.56

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Solution

The fourth proportional to 3,959.74, 5,454.30 and 3,329.56 is: 4,586.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.74 : 5,454.30 = 3,329.56 : x
  2. Step 2: Convert to fraction form
    3,959.74/5,454.30 = 3,329.56/x
  3. Step 3: Cross multiply
    3,959.74x = 5,454.30 × 3,329.56
  4. Step 4: Simplify right side
    3,959.74x = 18,160,419.11
  5. Step 5: Solve for x
    x = 18,160,419.11/3,959.74
  6. Step 6: Final answer
    x = 4,586.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.