Home / 5,280.14-7,279.97-3,388.38

Finding the Fourth Proportional to 5,280.14, 7,279.97 and 3,388.38

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Solution

The fourth proportional to 5,280.14, 7,279.97 and 3,388.38 is: 4,671.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.14 : 7,279.97 = 3,388.38 : x
  2. Step 2: Convert to fraction form
    5,280.14/7,279.97 = 3,388.38/x
  3. Step 3: Cross multiply
    5,280.14x = 7,279.97 × 3,388.38
  4. Step 4: Simplify right side
    5,280.14x = 24,667,287.81
  5. Step 5: Solve for x
    x = 24,667,287.81/5,280.14
  6. Step 6: Final answer
    x = 4,671.72

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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.