Home / 8,145.12-11,229.92-6,651.52

Finding the Fourth Proportional to 8,145.12, 11,229.92 and 6,651.52

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Solution

The fourth proportional to 8,145.12, 11,229.92 and 6,651.52 is: 9,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.12 : 11,229.92 = 6,651.52 : x
  2. Step 2: Convert to fraction form
    8,145.12/11,229.92 = 6,651.52/x
  3. Step 3: Cross multiply
    8,145.12x = 11,229.92 × 6,651.52
  4. Step 4: Simplify right side
    8,145.12x = 74,696,037.48
  5. Step 5: Solve for x
    x = 74,696,037.48/8,145.12
  6. Step 6: Final answer
    x = 9,170.65

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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.