Home / 3,891,687.18-5,370,538.71-2,172,869.20

Finding the Fourth Proportional to 3,891,687.18, 5,370,538.71 and 2,172,869.20

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Solution

The fourth proportional to 3,891,687.18, 5,370,538.71 and 2,172,869.20 is: 2,998,565.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891,687.18 : 5,370,538.71 = 2,172,869.20 : x
  2. Step 2: Convert to fraction form
    3,891,687.18/5,370,538.71 = 2,172,869.20/x
  3. Step 3: Cross multiply
    3,891,687.18x = 5,370,538.71 × 2,172,869.20
  4. Step 4: Simplify right side
    3,891,687.18x = 11,669,478,150,366.73
  5. Step 5: Solve for x
    x = 11,669,478,150,366.73/3,891,687.18
  6. Step 6: Final answer
    x = 2,998,565.30

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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.