Home / 2,319.50-3,479.41-759.09

Finding the Fourth Proportional to 2,319.50, 3,479.41 and 759.09

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Solution

The fourth proportional to 2,319.50, 3,479.41 and 759.09 is: 1,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.50 : 3,479.41 = 759.09 : x
  2. Step 2: Convert to fraction form
    2,319.50/3,479.41 = 759.09/x
  3. Step 3: Cross multiply
    2,319.50x = 3,479.41 × 759.09
  4. Step 4: Simplify right side
    2,319.50x = 2,641,175.49
  5. Step 5: Solve for x
    x = 2,641,175.49/2,319.50
  6. Step 6: Final answer
    x = 1,138.68

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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.