Home / 2,689.13-4,032.91-1,129.09

Finding the Fourth Proportional to 2,689.13, 4,032.91 and 1,129.09

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Solution

The fourth proportional to 2,689.13, 4,032.91 and 1,129.09 is: 1,693.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.13 : 4,032.91 = 1,129.09 : x
  2. Step 2: Convert to fraction form
    2,689.13/4,032.91 = 1,129.09/x
  3. Step 3: Cross multiply
    2,689.13x = 4,032.91 × 1,129.09
  4. Step 4: Simplify right side
    2,689.13x = 4,553,510.89
  5. Step 5: Solve for x
    x = 4,553,510.89/2,689.13
  6. Step 6: Final answer
    x = 1,693.30

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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.