Home / 3,991,803.89-5,508,691.40-2,156,262.08

Finding the Fourth Proportional to 3,991,803.89, 5,508,691.40 and 2,156,262.08

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Solution

The fourth proportional to 3,991,803.89, 5,508,691.40 and 2,156,262.08 is: 2,975,642.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991,803.89 : 5,508,691.40 = 2,156,262.08 : x
  2. Step 2: Convert to fraction form
    3,991,803.89/5,508,691.40 = 2,156,262.08/x
  3. Step 3: Cross multiply
    3,991,803.89x = 5,508,691.40 × 2,156,262.08
  4. Step 4: Simplify right side
    3,991,803.89x = 11,878,182,376,242.11
  5. Step 5: Solve for x
    x = 11,878,182,376,242.11/3,991,803.89
  6. Step 6: Final answer
    x = 2,975,642.77

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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.