Home / 1,251.20-1,725.35-1,074.75

Finding the Fourth Proportional to 1,251.20, 1,725.35 and 1,074.75

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Solution

The fourth proportional to 1,251.20, 1,725.35 and 1,074.75 is: 1,482.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.20 : 1,725.35 = 1,074.75 : x
  2. Step 2: Convert to fraction form
    1,251.20/1,725.35 = 1,074.75/x
  3. Step 3: Cross multiply
    1,251.20x = 1,725.35 × 1,074.75
  4. Step 4: Simplify right side
    1,251.20x = 1,854,314.54
  5. Step 5: Solve for x
    x = 1,854,314.54/1,251.20
  6. Step 6: Final answer
    x = 1,482.03

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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.