Home / 7,947.27-11,921.85-2,103.93

Finding the Fourth Proportional to 7,947.27, 11,921.85 and 2,103.93

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Solution

The fourth proportional to 7,947.27, 11,921.85 and 2,103.93 is: 3,156.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,947.27 : 11,921.85 = 2,103.93 : x
  2. Step 2: Convert to fraction form
    7,947.27/11,921.85 = 2,103.93/x
  3. Step 3: Cross multiply
    7,947.27x = 11,921.85 × 2,103.93
  4. Step 4: Simplify right side
    7,947.27x = 25,082,737.87
  5. Step 5: Solve for x
    x = 25,082,737.87/7,947.27
  6. Step 6: Final answer
    x = 3,156.15

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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.