Home / 3,921.19-5,877.97-1,421.62

Finding the Fourth Proportional to 3,921.19, 5,877.97 and 1,421.62

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Solution

The fourth proportional to 3,921.19, 5,877.97 and 1,421.62 is: 2,131.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.19 : 5,877.97 = 1,421.62 : x
  2. Step 2: Convert to fraction form
    3,921.19/5,877.97 = 1,421.62/x
  3. Step 3: Cross multiply
    3,921.19x = 5,877.97 × 1,421.62
  4. Step 4: Simplify right side
    3,921.19x = 8,356,221.46
  5. Step 5: Solve for x
    x = 8,356,221.46/3,921.19
  6. Step 6: Final answer
    x = 2,131.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.