Home / 1,449.11-2,181.49-1,319.94

Finding the Fourth Proportional to 1,449.11, 2,181.49 and 1,319.94

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Solution

The fourth proportional to 1,449.11, 2,181.49 and 1,319.94 is: 1,987.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.11 : 2,181.49 = 1,319.94 : x
  2. Step 2: Convert to fraction form
    1,449.11/2,181.49 = 1,319.94/x
  3. Step 3: Cross multiply
    1,449.11x = 2,181.49 × 1,319.94
  4. Step 4: Simplify right side
    1,449.11x = 2,879,425.00
  5. Step 5: Solve for x
    x = 2,879,425.00/1,449.11
  6. Step 6: Final answer
    x = 1,987.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.