Home / 2,178.29-3,267.88-1,398.26

Finding the Fourth Proportional to 2,178.29, 3,267.88 and 1,398.26

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Solution

The fourth proportional to 2,178.29, 3,267.88 and 1,398.26 is: 2,097.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.29 : 3,267.88 = 1,398.26 : x
  2. Step 2: Convert to fraction form
    2,178.29/3,267.88 = 1,398.26/x
  3. Step 3: Cross multiply
    2,178.29x = 3,267.88 × 1,398.26
  4. Step 4: Simplify right side
    2,178.29x = 4,569,350.56
  5. Step 5: Solve for x
    x = 4,569,350.56/2,178.29
  6. Step 6: Final answer
    x = 2,097.68

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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.