Home / 7,615.30-11,425.68-5,531.78

Finding the Fourth Proportional to 7,615.30, 11,425.68 and 5,531.78

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Solution

The fourth proportional to 7,615.30, 11,425.68 and 5,531.78 is: 8,299.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.30 : 11,425.68 = 5,531.78 : x
  2. Step 2: Convert to fraction form
    7,615.30/11,425.68 = 5,531.78/x
  3. Step 3: Cross multiply
    7,615.30x = 11,425.68 × 5,531.78
  4. Step 4: Simplify right side
    7,615.30x = 63,204,290.98
  5. Step 5: Solve for x
    x = 63,204,290.98/7,615.30
  6. Step 6: Final answer
    x = 8,299.65

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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.