Home / 1,738.80-2,608.20-1,217.70

Finding the Fourth Proportional to 1,738.80, 2,608.20 and 1,217.70

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Solution

The fourth proportional to 1,738.80, 2,608.20 and 1,217.70 is: 1,826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738.80 : 2,608.20 = 1,217.70 : x
  2. Step 2: Convert to fraction form
    1,738.80/2,608.20 = 1,217.70/x
  3. Step 3: Cross multiply
    1,738.80x = 2,608.20 × 1,217.70
  4. Step 4: Simplify right side
    1,738.80x = 3,176,005.14
  5. Step 5: Solve for x
    x = 3,176,005.14/1,738.80
  6. Step 6: Final answer
    x = 1,826.55

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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.