Home / 5,121.06-7,066.98-2,882.86

Finding the Fourth Proportional to 5,121.06, 7,066.98 and 2,882.86

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Solution

The fourth proportional to 5,121.06, 7,066.98 and 2,882.86 is: 3,978.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.06 : 7,066.98 = 2,882.86 : x
  2. Step 2: Convert to fraction form
    5,121.06/7,066.98 = 2,882.86/x
  3. Step 3: Cross multiply
    5,121.06x = 7,066.98 × 2,882.86
  4. Step 4: Simplify right side
    5,121.06x = 20,373,113.96
  5. Step 5: Solve for x
    x = 20,373,113.96/5,121.06
  6. Step 6: Final answer
    x = 3,978.30

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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.