Home / 3,991,901.91-5,508,820.19-2,156,359.76

Finding the Fourth Proportional to 3,991,901.91, 5,508,820.19 and 2,156,359.76

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Solution

The fourth proportional to 3,991,901.91, 5,508,820.19 and 2,156,359.76 is: 2,975,774.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991,901.91 : 5,508,820.19 = 2,156,359.76 : x
  2. Step 2: Convert to fraction form
    3,991,901.91/5,508,820.19 = 2,156,359.76/x
  3. Step 3: Cross multiply
    3,991,901.91x = 5,508,820.19 × 2,156,359.76
  4. Step 4: Simplify right side
    3,991,901.91x = 11,878,998,182,791.55
  5. Step 5: Solve for x
    x = 11,878,998,182,791.55/3,991,901.91
  6. Step 6: Final answer
    x = 2,975,774.07

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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.