Home / 3,870,909.38-5,341,875.72-2,128,691.12

Finding the Fourth Proportional to 3,870,909.38, 5,341,875.72 and 2,128,691.12

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Solution

The fourth proportional to 3,870,909.38, 5,341,875.72 and 2,128,691.12 is: 2,937,605.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870,909.38 : 5,341,875.72 = 2,128,691.12 : x
  2. Step 2: Convert to fraction form
    3,870,909.38/5,341,875.72 = 2,128,691.12/x
  3. Step 3: Cross multiply
    3,870,909.38x = 5,341,875.72 × 2,128,691.12
  4. Step 4: Simplify right side
    3,870,909.38x = 11,371,203,409,307.61
  5. Step 5: Solve for x
    x = 11,371,203,409,307.61/3,870,909.38
  6. Step 6: Final answer
    x = 2,937,605.17

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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.