Home / 3,870,908.38-5,341,874.34-2,128,690.12

Finding the Fourth Proportional to 3,870,908.38, 5,341,874.34 and 2,128,690.12

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Solution

The fourth proportional to 3,870,908.38, 5,341,874.34 and 2,128,690.12 is: 2,937,603.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870,908.38 : 5,341,874.34 = 2,128,690.12 : x
  2. Step 2: Convert to fraction form
    3,870,908.38/5,341,874.34 = 2,128,690.12/x
  3. Step 3: Cross multiply
    3,870,908.38x = 5,341,874.34 × 2,128,690.12
  4. Step 4: Simplify right side
    3,870,908.38x = 11,371,195,129,839.52
  5. Step 5: Solve for x
    x = 11,371,195,129,839.52/3,870,908.38
  6. Step 6: Final answer
    x = 2,937,603.79

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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.