Home / 3,868.55-5,800.22-1,787.40

Finding the Fourth Proportional to 3,868.55, 5,800.22 and 1,787.40

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Solution

The fourth proportional to 3,868.55, 5,800.22 and 1,787.40 is: 2,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.55 : 5,800.22 = 1,787.40 : x
  2. Step 2: Convert to fraction form
    3,868.55/5,800.22 = 1,787.40/x
  3. Step 3: Cross multiply
    3,868.55x = 5,800.22 × 1,787.40
  4. Step 4: Simplify right side
    3,868.55x = 10,367,304.29
  5. Step 5: Solve for x
    x = 10,367,304.29/3,868.55
  6. Step 6: Final answer
    x = 2,679.90

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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.