Home / 2,689.36-4,034.03-1,128.94

Finding the Fourth Proportional to 2,689.36, 4,034.03 and 1,128.94

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Solution

The fourth proportional to 2,689.36, 4,034.03 and 1,128.94 is: 1,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.36 : 4,034.03 = 1,128.94 : x
  2. Step 2: Convert to fraction form
    2,689.36/4,034.03 = 1,128.94/x
  3. Step 3: Cross multiply
    2,689.36x = 4,034.03 × 1,128.94
  4. Step 4: Simplify right side
    2,689.36x = 4,554,177.83
  5. Step 5: Solve for x
    x = 4,554,177.83/2,689.36
  6. Step 6: Final answer
    x = 1,693.41

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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.