Home / 8,631.68-11,912.89-5,047.70

Finding the Fourth Proportional to 8,631.68, 11,912.89 and 5,047.70

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Solution

The fourth proportional to 8,631.68, 11,912.89 and 5,047.70 is: 6,966.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.68 : 11,912.89 = 5,047.70 : x
  2. Step 2: Convert to fraction form
    8,631.68/11,912.89 = 5,047.70/x
  3. Step 3: Cross multiply
    8,631.68x = 11,912.89 × 5,047.70
  4. Step 4: Simplify right side
    8,631.68x = 60,132,694.85
  5. Step 5: Solve for x
    x = 60,132,694.85/8,631.68
  6. Step 6: Final answer
    x = 6,966.51

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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.