Home / 3,432.21-5,147.25-1,787.87

Finding the Fourth Proportional to 3,432.21, 5,147.25 and 1,787.87

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Solution

The fourth proportional to 3,432.21, 5,147.25 and 1,787.87 is: 2,681.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.21 : 5,147.25 = 1,787.87 : x
  2. Step 2: Convert to fraction form
    3,432.21/5,147.25 = 1,787.87/x
  3. Step 3: Cross multiply
    3,432.21x = 5,147.25 × 1,787.87
  4. Step 4: Simplify right side
    3,432.21x = 9,202,588.12
  5. Step 5: Solve for x
    x = 9,202,588.12/3,432.21
  6. Step 6: Final answer
    x = 2,681.24

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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.