Home / 1,738.20-2,398.68-1,039.80

Finding the Fourth Proportional to 1,738.20, 2,398.68 and 1,039.80

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Solution

The fourth proportional to 1,738.20, 2,398.68 and 1,039.80 is: 1,434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738.20 : 2,398.68 = 1,039.80 : x
  2. Step 2: Convert to fraction form
    1,738.20/2,398.68 = 1,039.80/x
  3. Step 3: Cross multiply
    1,738.20x = 2,398.68 × 1,039.80
  4. Step 4: Simplify right side
    1,738.20x = 2,494,147.46
  5. Step 5: Solve for x
    x = 2,494,147.46/1,738.20
  6. Step 6: Final answer
    x = 1,434.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.