Home / 3,881.24-5,355.68-2,287.79

Finding the Fourth Proportional to 3,881.24, 5,355.68 and 2,287.79

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Solution

The fourth proportional to 3,881.24, 5,355.68 and 2,287.79 is: 3,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.24 : 5,355.68 = 2,287.79 : x
  2. Step 2: Convert to fraction form
    3,881.24/5,355.68 = 2,287.79/x
  3. Step 3: Cross multiply
    3,881.24x = 5,355.68 × 2,287.79
  4. Step 4: Simplify right side
    3,881.24x = 12,252,671.15
  5. Step 5: Solve for x
    x = 12,252,671.15/3,881.24
  6. Step 6: Final answer
    x = 3,156.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.