Home / 7,847.15-11,761.80-3,901.17

Finding the Fourth Proportional to 7,847.15, 11,761.80 and 3,901.17

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Solution

The fourth proportional to 7,847.15, 11,761.80 and 3,901.17 is: 5,847.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,847.15 : 11,761.80 = 3,901.17 : x
  2. Step 2: Convert to fraction form
    7,847.15/11,761.80 = 3,901.17/x
  3. Step 3: Cross multiply
    7,847.15x = 11,761.80 × 3,901.17
  4. Step 4: Simplify right side
    7,847.15x = 45,884,781.31
  5. Step 5: Solve for x
    x = 45,884,781.31/7,847.15
  6. Step 6: Final answer
    x = 5,847.32

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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.