Home / 4,006.30-5,531.78-3,120.57

Finding the Fourth Proportional to 4,006.30, 5,531.78 and 3,120.57

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Solution

The fourth proportional to 4,006.30, 5,531.78 and 3,120.57 is: 4,308.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,006.30 : 5,531.78 = 3,120.57 : x
  2. Step 2: Convert to fraction form
    4,006.30/5,531.78 = 3,120.57/x
  3. Step 3: Cross multiply
    4,006.30x = 5,531.78 × 3,120.57
  4. Step 4: Simplify right side
    4,006.30x = 17,262,306.71
  5. Step 5: Solve for x
    x = 17,262,306.71/4,006.30
  6. Step 6: Final answer
    x = 4,308.79

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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.