Home / 5,279.10-7,911.36-5,121.42

Finding the Fourth Proportional to 5,279.10, 7,911.36 and 5,121.42

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Solution

The fourth proportional to 5,279.10, 7,911.36 and 5,121.42 is: 7,675.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.10 : 7,911.36 = 5,121.42 : x
  2. Step 2: Convert to fraction form
    5,279.10/7,911.36 = 5,121.42/x
  3. Step 3: Cross multiply
    5,279.10x = 7,911.36 × 5,121.42
  4. Step 4: Simplify right side
    5,279.10x = 40,517,397.33
  5. Step 5: Solve for x
    x = 40,517,397.33/5,279.10
  6. Step 6: Final answer
    x = 7,675.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.