Home / 1,687.46-2,531.79-1,224.45

Finding the Fourth Proportional to 1,687.46, 2,531.79 and 1,224.45

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Solution

The fourth proportional to 1,687.46, 2,531.79 and 1,224.45 is: 1,837.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.46 : 2,531.79 = 1,224.45 : x
  2. Step 2: Convert to fraction form
    1,687.46/2,531.79 = 1,224.45/x
  3. Step 3: Cross multiply
    1,687.46x = 2,531.79 × 1,224.45
  4. Step 4: Simplify right side
    1,687.46x = 3,100,050.27
  5. Step 5: Solve for x
    x = 3,100,050.27/1,687.46
  6. Step 6: Final answer
    x = 1,837.12

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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.