Home / 1,449.51-2,174.27-1,387.55

Finding the Fourth Proportional to 1,449.51, 2,174.27 and 1,387.55

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Solution

The fourth proportional to 1,449.51, 2,174.27 and 1,387.55 is: 2,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.51 : 2,174.27 = 1,387.55 : x
  2. Step 2: Convert to fraction form
    1,449.51/2,174.27 = 1,387.55/x
  3. Step 3: Cross multiply
    1,449.51x = 2,174.27 × 1,387.55
  4. Step 4: Simplify right side
    1,449.51x = 3,016,890.53
  5. Step 5: Solve for x
    x = 3,016,890.53/1,449.51
  6. Step 6: Final answer
    x = 2,081.32

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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.