Home / 5,125.16-7,071.30-2,886.90

Finding the Fourth Proportional to 5,125.16, 7,071.30 and 2,886.90

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Solution

The fourth proportional to 5,125.16, 7,071.30 and 2,886.90 is: 3,983.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.16 : 7,071.30 = 2,886.90 : x
  2. Step 2: Convert to fraction form
    5,125.16/7,071.30 = 2,886.90/x
  3. Step 3: Cross multiply
    5,125.16x = 7,071.30 × 2,886.90
  4. Step 4: Simplify right side
    5,125.16x = 20,414,135.97
  5. Step 5: Solve for x
    x = 20,414,135.97/5,125.16
  6. Step 6: Final answer
    x = 3,983.13

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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.