Home / 1,415.28-2,121.13-1,067.47

Finding the Fourth Proportional to 1,415.28, 2,121.13 and 1,067.47

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Solution

The fourth proportional to 1,415.28, 2,121.13 and 1,067.47 is: 1,599.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.28 : 2,121.13 = 1,067.47 : x
  2. Step 2: Convert to fraction form
    1,415.28/2,121.13 = 1,067.47/x
  3. Step 3: Cross multiply
    1,415.28x = 2,121.13 × 1,067.47
  4. Step 4: Simplify right side
    1,415.28x = 2,264,242.64
  5. Step 5: Solve for x
    x = 2,264,242.64/1,415.28
  6. Step 6: Final answer
    x = 1,599.85

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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.