Home / 3,781.12-5,667.68-1,586.80

Finding the Fourth Proportional to 3,781.12, 5,667.68 and 1,586.80

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Solution

The fourth proportional to 3,781.12, 5,667.68 and 1,586.80 is: 2,378.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.12 : 5,667.68 = 1,586.80 : x
  2. Step 2: Convert to fraction form
    3,781.12/5,667.68 = 1,586.80/x
  3. Step 3: Cross multiply
    3,781.12x = 5,667.68 × 1,586.80
  4. Step 4: Simplify right side
    3,781.12x = 8,993,474.62
  5. Step 5: Solve for x
    x = 8,993,474.62/3,781.12
  6. Step 6: Final answer
    x = 2,378.52

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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.