Home / 1,727.12-2,380.59-1,255.10

Finding the Fourth Proportional to 1,727.12, 2,380.59 and 1,255.10

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Solution

The fourth proportional to 1,727.12, 2,380.59 and 1,255.10 is: 1,729.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.12 : 2,380.59 = 1,255.10 : x
  2. Step 2: Convert to fraction form
    1,727.12/2,380.59 = 1,255.10/x
  3. Step 3: Cross multiply
    1,727.12x = 2,380.59 × 1,255.10
  4. Step 4: Simplify right side
    1,727.12x = 2,987,866.61
  5. Step 5: Solve for x
    x = 2,987,866.61/1,727.12
  6. Step 6: Final answer
    x = 1,729.97

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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.