Home / 6,974.15-9,624.38-3,989.80

Finding the Fourth Proportional to 6,974.15, 9,624.38 and 3,989.80

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Solution

The fourth proportional to 6,974.15, 9,624.38 and 3,989.80 is: 5,505.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,974.15 : 9,624.38 = 3,989.80 : x
  2. Step 2: Convert to fraction form
    6,974.15/9,624.38 = 3,989.80/x
  3. Step 3: Cross multiply
    6,974.15x = 9,624.38 × 3,989.80
  4. Step 4: Simplify right side
    6,974.15x = 38,399,283.25
  5. Step 5: Solve for x
    x = 38,399,283.25/6,974.15
  6. Step 6: Final answer
    x = 5,505.95

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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.