Home / 3,898.15-5,381.22-2,483.78

Finding the Fourth Proportional to 3,898.15, 5,381.22 and 2,483.78

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Solution

The fourth proportional to 3,898.15, 5,381.22 and 2,483.78 is: 3,428.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.15 : 5,381.22 = 2,483.78 : x
  2. Step 2: Convert to fraction form
    3,898.15/5,381.22 = 2,483.78/x
  3. Step 3: Cross multiply
    3,898.15x = 5,381.22 × 2,483.78
  4. Step 4: Simplify right side
    3,898.15x = 13,365,766.61
  5. Step 5: Solve for x
    x = 13,365,766.61/3,898.15
  6. Step 6: Final answer
    x = 3,428.75

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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.