Home / 1,686.26-2,522.13-1,218.74

Finding the Fourth Proportional to 1,686.26, 2,522.13 and 1,218.74

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Solution

The fourth proportional to 1,686.26, 2,522.13 and 1,218.74 is: 1,822.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.26 : 2,522.13 = 1,218.74 : x
  2. Step 2: Convert to fraction form
    1,686.26/2,522.13 = 1,218.74/x
  3. Step 3: Cross multiply
    1,686.26x = 2,522.13 × 1,218.74
  4. Step 4: Simplify right side
    1,686.26x = 3,073,820.72
  5. Step 5: Solve for x
    x = 3,073,820.72/1,686.26
  6. Step 6: Final answer
    x = 1,822.86

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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.