Home / 5,689.31-7,851.26-3,171.92

Finding the Fourth Proportional to 5,689.31, 7,851.26 and 3,171.92

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Solution

The fourth proportional to 5,689.31, 7,851.26 and 3,171.92 is: 4,377.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,689.31 : 7,851.26 = 3,171.92 : x
  2. Step 2: Convert to fraction form
    5,689.31/7,851.26 = 3,171.92/x
  3. Step 3: Cross multiply
    5,689.31x = 7,851.26 × 3,171.92
  4. Step 4: Simplify right side
    5,689.31x = 24,903,568.62
  5. Step 5: Solve for x
    x = 24,903,568.62/5,689.31
  6. Step 6: Final answer
    x = 4,377.26

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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.