Home / 1,759.07-2,639.32-979.61

Finding the Fourth Proportional to 1,759.07, 2,639.32 and 979.61

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Solution

The fourth proportional to 1,759.07, 2,639.32 and 979.61 is: 1,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.07 : 2,639.32 = 979.61 : x
  2. Step 2: Convert to fraction form
    1,759.07/2,639.32 = 979.61/x
  3. Step 3: Cross multiply
    1,759.07x = 2,639.32 × 979.61
  4. Step 4: Simplify right side
    1,759.07x = 2,585,488.62
  5. Step 5: Solve for x
    x = 2,585,488.62/1,759.07
  6. Step 6: Final answer
    x = 1,469.80

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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.