Home / 8,515.68-11,749.20-5,531.52

Finding the Fourth Proportional to 8,515.68, 11,749.20 and 5,531.52

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Solution

The fourth proportional to 8,515.68, 11,749.20 and 5,531.52 is: 7,631.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.68 : 11,749.20 = 5,531.52 : x
  2. Step 2: Convert to fraction form
    8,515.68/11,749.20 = 5,531.52/x
  3. Step 3: Cross multiply
    8,515.68x = 11,749.20 × 5,531.52
  4. Step 4: Simplify right side
    8,515.68x = 64,990,934.78
  5. Step 5: Solve for x
    x = 64,990,934.78/8,515.68
  6. Step 6: Final answer
    x = 7,631.91

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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.