Home / 1,426.82-2,140.28-452.91

Finding the Fourth Proportional to 1,426.82, 2,140.28 and 452.91

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Solution

The fourth proportional to 1,426.82, 2,140.28 and 452.91 is: 679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.82 : 2,140.28 = 452.91 : x
  2. Step 2: Convert to fraction form
    1,426.82/2,140.28 = 452.91/x
  3. Step 3: Cross multiply
    1,426.82x = 2,140.28 × 452.91
  4. Step 4: Simplify right side
    1,426.82x = 969,351.95
  5. Step 5: Solve for x
    x = 969,351.95/1,426.82
  6. Step 6: Final answer
    x = 679.38

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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.