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Finding the Fourth Proportional to 3,895,626.22, 5,375,870.32 and 2,129,446.02

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Solution

The fourth proportional to 3,895,626.22, 5,375,870.32 and 2,129,446.02 is: 2,938,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895,626.22 : 5,375,870.32 = 2,129,446.02 : x
  2. Step 2: Convert to fraction form
    3,895,626.22/5,375,870.32 = 2,129,446.02/x
  3. Step 3: Cross multiply
    3,895,626.22x = 5,375,870.32 × 2,129,446.02
  4. Step 4: Simplify right side
    3,895,626.22x = 11,447,625,656,960.13
  5. Step 5: Solve for x
    x = 11,447,625,656,960.13/3,895,626.22
  6. Step 6: Final answer
    x = 2,938,584.20

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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.