Home / 5,689.16-7,850.80-3,171.28

Finding the Fourth Proportional to 5,689.16, 7,850.80 and 3,171.28

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Solution

The fourth proportional to 5,689.16, 7,850.80 and 3,171.28 is: 4,376.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,689.16 : 7,850.80 = 3,171.28 : x
  2. Step 2: Convert to fraction form
    5,689.16/7,850.80 = 3,171.28/x
  3. Step 3: Cross multiply
    5,689.16x = 7,850.80 × 3,171.28
  4. Step 4: Simplify right side
    5,689.16x = 24,897,085.02
  5. Step 5: Solve for x
    x = 24,897,085.02/5,689.16
  6. Step 6: Final answer
    x = 4,376.23

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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.