Home / 1,862.16-2,569.42-1,272.48

Finding the Fourth Proportional to 1,862.16, 2,569.42 and 1,272.48

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Solution

The fourth proportional to 1,862.16, 2,569.42 and 1,272.48 is: 1,755.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,862.16 : 2,569.42 = 1,272.48 : x
  2. Step 2: Convert to fraction form
    1,862.16/2,569.42 = 1,272.48/x
  3. Step 3: Cross multiply
    1,862.16x = 2,569.42 × 1,272.48
  4. Step 4: Simplify right side
    1,862.16x = 3,269,535.56
  5. Step 5: Solve for x
    x = 3,269,535.56/1,862.16
  6. Step 6: Final answer
    x = 1,755.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.