Home / 3,121,981.80-4,681,806.30-2,172,532.20

Finding the Fourth Proportional to 3,121,981.80, 4,681,806.30 and 2,172,532.20

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Solution

The fourth proportional to 3,121,981.80, 4,681,806.30 and 2,172,532.20 is: 3,257,986.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,981.80 : 4,681,806.30 = 2,172,532.20 : x
  2. Step 2: Convert to fraction form
    3,121,981.80/4,681,806.30 = 2,172,532.20/x
  3. Step 3: Cross multiply
    3,121,981.80x = 4,681,806.30 × 2,172,532.20
  4. Step 4: Simplify right side
    3,121,981.80x = 10,171,374,940,912.86
  5. Step 5: Solve for x
    x = 10,171,374,940,912.86/3,121,981.80
  6. Step 6: Final answer
    x = 3,257,986.62

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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.