Home / 10,456.68-15,674.07-3,879.90

Finding the Fourth Proportional to 10,456.68, 15,674.07 and 3,879.90

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Solution

The fourth proportional to 10,456.68, 15,674.07 and 3,879.90 is: 5,815.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,456.68 : 15,674.07 = 3,879.90 : x
  2. Step 2: Convert to fraction form
    10,456.68/15,674.07 = 3,879.90/x
  3. Step 3: Cross multiply
    10,456.68x = 15,674.07 × 3,879.90
  4. Step 4: Simplify right side
    10,456.68x = 60,813,824.19
  5. Step 5: Solve for x
    x = 60,813,824.19/10,456.68
  6. Step 6: Final answer
    x = 5,815.79

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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.