Home / 5,707.12-7,879.52-5,108.56

Finding the Fourth Proportional to 5,707.12, 7,879.52 and 5,108.56

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Solution

The fourth proportional to 5,707.12, 7,879.52 and 5,108.56 is: 7,053.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,707.12 : 7,879.52 = 5,108.56 : x
  2. Step 2: Convert to fraction form
    5,707.12/7,879.52 = 5,108.56/x
  3. Step 3: Cross multiply
    5,707.12x = 7,879.52 × 5,108.56
  4. Step 4: Simplify right side
    5,707.12x = 40,253,000.69
  5. Step 5: Solve for x
    x = 40,253,000.69/5,707.12
  6. Step 6: Final answer
    x = 7,053.12

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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.