Home / 3,921.27-5,881.68-1,288.77

Finding the Fourth Proportional to 3,921.27, 5,881.68 and 1,288.77

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Solution

The fourth proportional to 3,921.27, 5,881.68 and 1,288.77 is: 1,933.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.27 : 5,881.68 = 1,288.77 : x
  2. Step 2: Convert to fraction form
    3,921.27/5,881.68 = 1,288.77/x
  3. Step 3: Cross multiply
    3,921.27x = 5,881.68 × 1,288.77
  4. Step 4: Simplify right side
    3,921.27x = 7,580,132.73
  5. Step 5: Solve for x
    x = 7,580,132.73/3,921.27
  6. Step 6: Final answer
    x = 1,933.08

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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.