Home / 1,431.09-2,144.11-1,253.41

Finding the Fourth Proportional to 1,431.09, 2,144.11 and 1,253.41

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Solution

The fourth proportional to 1,431.09, 2,144.11 and 1,253.41 is: 1,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.09 : 2,144.11 = 1,253.41 : x
  2. Step 2: Convert to fraction form
    1,431.09/2,144.11 = 1,253.41/x
  3. Step 3: Cross multiply
    1,431.09x = 2,144.11 × 1,253.41
  4. Step 4: Simplify right side
    1,431.09x = 2,687,446.79
  5. Step 5: Solve for x
    x = 2,687,446.79/1,431.09
  6. Step 6: Final answer
    x = 1,877.90

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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.