Home / 7,981.74-11,947.50-5,789.88

Finding the Fourth Proportional to 7,981.74, 11,947.50 and 5,789.88

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Solution

The fourth proportional to 7,981.74, 11,947.50 and 5,789.88 is: 8,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.74 : 11,947.50 = 5,789.88 : x
  2. Step 2: Convert to fraction form
    7,981.74/11,947.50 = 5,789.88/x
  3. Step 3: Cross multiply
    7,981.74x = 11,947.50 × 5,789.88
  4. Step 4: Simplify right side
    7,981.74x = 69,174,591.30
  5. Step 5: Solve for x
    x = 69,174,591.30/7,981.74
  6. Step 6: Final answer
    x = 8,666.61

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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.