Home / 5,279.74-7,287.69-3,289.12

Finding the Fourth Proportional to 5,279.74, 7,287.69 and 3,289.12

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Solution

The fourth proportional to 5,279.74, 7,287.69 and 3,289.12 is: 4,540.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.74 : 7,287.69 = 3,289.12 : x
  2. Step 2: Convert to fraction form
    5,279.74/7,287.69 = 3,289.12/x
  3. Step 3: Cross multiply
    5,279.74x = 7,287.69 × 3,289.12
  4. Step 4: Simplify right side
    5,279.74x = 23,970,086.93
  5. Step 5: Solve for x
    x = 23,970,086.93/5,279.74
  6. Step 6: Final answer
    x = 4,540.01

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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.