Home / 9,129.66-13,689.30-2,891.24

Finding the Fourth Proportional to 9,129.66, 13,689.30 and 2,891.24

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Solution

The fourth proportional to 9,129.66, 13,689.30 and 2,891.24 is: 4,335.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.66 : 13,689.30 = 2,891.24 : x
  2. Step 2: Convert to fraction form
    9,129.66/13,689.30 = 2,891.24/x
  3. Step 3: Cross multiply
    9,129.66x = 13,689.30 × 2,891.24
  4. Step 4: Simplify right side
    9,129.66x = 39,579,122.46
  5. Step 5: Solve for x
    x = 39,579,122.46/9,129.66
  6. Step 6: Final answer
    x = 4,335.22

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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.