Home / 1,426.71-2,140.49-452.79

Finding the Fourth Proportional to 1,426.71, 2,140.49 and 452.79

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Solution

The fourth proportional to 1,426.71, 2,140.49 and 452.79 is: 679.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.71 : 2,140.49 = 452.79 : x
  2. Step 2: Convert to fraction form
    1,426.71/2,140.49 = 452.79/x
  3. Step 3: Cross multiply
    1,426.71x = 2,140.49 × 452.79
  4. Step 4: Simplify right side
    1,426.71x = 969,190.20
  5. Step 5: Solve for x
    x = 969,190.20/1,426.71
  6. Step 6: Final answer
    x = 679.32

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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.