Home / 3,286.72-4,931.70-2,319.04

Finding the Fourth Proportional to 3,286.72, 4,931.70 and 2,319.04

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Solution

The fourth proportional to 3,286.72, 4,931.70 and 2,319.04 is: 3,479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.72 : 4,931.70 = 2,319.04 : x
  2. Step 2: Convert to fraction form
    3,286.72/4,931.70 = 2,319.04/x
  3. Step 3: Cross multiply
    3,286.72x = 4,931.70 × 2,319.04
  4. Step 4: Simplify right side
    3,286.72x = 11,436,809.57
  5. Step 5: Solve for x
    x = 11,436,809.57/3,286.72
  6. Step 6: Final answer
    x = 3,479.70

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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.