Home / 7,690.16-11,531.14-3,983.20

Finding the Fourth Proportional to 7,690.16, 11,531.14 and 3,983.20

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Solution

The fourth proportional to 7,690.16, 11,531.14 and 3,983.20 is: 5,972.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.16 : 11,531.14 = 3,983.20 : x
  2. Step 2: Convert to fraction form
    7,690.16/11,531.14 = 3,983.20/x
  3. Step 3: Cross multiply
    7,690.16x = 11,531.14 × 3,983.20
  4. Step 4: Simplify right side
    7,690.16x = 45,930,836.85
  5. Step 5: Solve for x
    x = 45,930,836.85/7,690.16
  6. Step 6: Final answer
    x = 5,972.68

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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.