Home / 3,426.65-5,135.86-2,108.29

Finding the Fourth Proportional to 3,426.65, 5,135.86 and 2,108.29

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Solution

The fourth proportional to 3,426.65, 5,135.86 and 2,108.29 is: 3,159.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.65 : 5,135.86 = 2,108.29 : x
  2. Step 2: Convert to fraction form
    3,426.65/5,135.86 = 2,108.29/x
  3. Step 3: Cross multiply
    3,426.65x = 5,135.86 × 2,108.29
  4. Step 4: Simplify right side
    3,426.65x = 10,827,882.28
  5. Step 5: Solve for x
    x = 10,827,882.28/3,426.65
  6. Step 6: Final answer
    x = 3,159.90

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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.