Home / 5,121.11-7,066.86-2,882.91

Finding the Fourth Proportional to 5,121.11, 7,066.86 and 2,882.91

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Solution

The fourth proportional to 5,121.11, 7,066.86 and 2,882.91 is: 3,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.11 : 7,066.86 = 2,882.91 : x
  2. Step 2: Convert to fraction form
    5,121.11/7,066.86 = 2,882.91/x
  3. Step 3: Cross multiply
    5,121.11x = 7,066.86 × 2,882.91
  4. Step 4: Simplify right side
    5,121.11x = 20,373,121.36
  5. Step 5: Solve for x
    x = 20,373,121.36/5,121.11
  6. Step 6: Final answer
    x = 3,978.27

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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.