Home / 1,426.57-2,128.33-1,218.73

Finding the Fourth Proportional to 1,426.57, 2,128.33 and 1,218.73

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Solution

The fourth proportional to 1,426.57, 2,128.33 and 1,218.73 is: 1,818.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.57 : 2,128.33 = 1,218.73 : x
  2. Step 2: Convert to fraction form
    1,426.57/2,128.33 = 1,218.73/x
  3. Step 3: Cross multiply
    1,426.57x = 2,128.33 × 1,218.73
  4. Step 4: Simplify right side
    1,426.57x = 2,593,862.67
  5. Step 5: Solve for x
    x = 2,593,862.67/1,426.57
  6. Step 6: Final answer
    x = 1,818.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.