Home / 5,279.16-7,286.76-3,127.72

Finding the Fourth Proportional to 5,279.16, 7,286.76 and 3,127.72

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Solution

The fourth proportional to 5,279.16, 7,286.76 and 3,127.72 is: 4,317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.16 : 7,286.76 = 3,127.72 : x
  2. Step 2: Convert to fraction form
    5,279.16/7,286.76 = 3,127.72/x
  3. Step 3: Cross multiply
    5,279.16x = 7,286.76 × 3,127.72
  4. Step 4: Simplify right side
    5,279.16x = 22,790,944.99
  5. Step 5: Solve for x
    x = 22,790,944.99/5,279.16
  6. Step 6: Final answer
    x = 4,317.15

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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.