Home / 5,279.67-7,286.03-2,889.84

Finding the Fourth Proportional to 5,279.67, 7,286.03 and 2,889.84

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Solution

The fourth proportional to 5,279.67, 7,286.03 and 2,889.84 is: 3,988.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.67 : 7,286.03 = 2,889.84 : x
  2. Step 2: Convert to fraction form
    5,279.67/7,286.03 = 2,889.84/x
  3. Step 3: Cross multiply
    5,279.67x = 7,286.03 × 2,889.84
  4. Step 4: Simplify right side
    5,279.67x = 21,055,446.49
  5. Step 5: Solve for x
    x = 21,055,446.49/5,279.67
  6. Step 6: Final answer
    x = 3,988.02

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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.