Home / 1,251.20-1,738.56-1,235.68

Finding the Fourth Proportional to 1,251.20, 1,738.56 and 1,235.68

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Solution

The fourth proportional to 1,251.20, 1,738.56 and 1,235.68 is: 1,716.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.20 : 1,738.56 = 1,235.68 : x
  2. Step 2: Convert to fraction form
    1,251.20/1,738.56 = 1,235.68/x
  3. Step 3: Cross multiply
    1,251.20x = 1,738.56 × 1,235.68
  4. Step 4: Simplify right side
    1,251.20x = 2,148,303.82
  5. Step 5: Solve for x
    x = 2,148,303.82/1,251.20
  6. Step 6: Final answer
    x = 1,716.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.