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Finding the Fourth Proportional to 2,239.87, 3,358.72 and 679.59

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Solution

The fourth proportional to 2,239.87, 3,358.72 and 679.59 is: 1,019.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.87 : 3,358.72 = 679.59 : x
  2. Step 2: Convert to fraction form
    2,239.87/3,358.72 = 679.59/x
  3. Step 3: Cross multiply
    2,239.87x = 3,358.72 × 679.59
  4. Step 4: Simplify right side
    2,239.87x = 2,282,549.55
  5. Step 5: Solve for x
    x = 2,282,549.55/2,239.87
  6. Step 6: Final answer
    x = 1,019.05

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1.5x scale

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.