Home / 5,147.52-7,103.66-2,879.11

Finding the Fourth Proportional to 5,147.52, 7,103.66 and 2,879.11

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Solution

The fourth proportional to 5,147.52, 7,103.66 and 2,879.11 is: 3,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.52 : 7,103.66 = 2,879.11 : x
  2. Step 2: Convert to fraction form
    5,147.52/7,103.66 = 2,879.11/x
  3. Step 3: Cross multiply
    5,147.52x = 7,103.66 × 2,879.11
  4. Step 4: Simplify right side
    5,147.52x = 20,452,233.27
  5. Step 5: Solve for x
    x = 20,452,233.27/5,147.52
  6. Step 6: Final answer
    x = 3,973.22

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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.