Home / 7,864.82-11,781.73-4,157.85

Finding the Fourth Proportional to 7,864.82, 11,781.73 and 4,157.85

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Solution

The fourth proportional to 7,864.82, 11,781.73 and 4,157.85 is: 6,228.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,864.82 : 11,781.73 = 4,157.85 : x
  2. Step 2: Convert to fraction form
    7,864.82/11,781.73 = 4,157.85/x
  3. Step 3: Cross multiply
    7,864.82x = 11,781.73 × 4,157.85
  4. Step 4: Simplify right side
    7,864.82x = 48,986,715.46
  5. Step 5: Solve for x
    x = 48,986,715.46/7,864.82
  6. Step 6: Final answer
    x = 6,228.59

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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.