Home / 3,128.27-4,689.14-1,253.43

Finding the Fourth Proportional to 3,128.27, 4,689.14 and 1,253.43

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Solution

The fourth proportional to 3,128.27, 4,689.14 and 1,253.43 is: 1,878.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.27 : 4,689.14 = 1,253.43 : x
  2. Step 2: Convert to fraction form
    3,128.27/4,689.14 = 1,253.43/x
  3. Step 3: Cross multiply
    3,128.27x = 4,689.14 × 1,253.43
  4. Step 4: Simplify right side
    3,128.27x = 5,877,502.48
  5. Step 5: Solve for x
    x = 5,877,502.48/3,128.27
  6. Step 6: Final answer
    x = 1,878.84

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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.