Home / 2,159.29-2,980.11-1,227.61

Finding the Fourth Proportional to 2,159.29, 2,980.11 and 1,227.61

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Solution

The fourth proportional to 2,159.29, 2,980.11 and 1,227.61 is: 1,694.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.29 : 2,980.11 = 1,227.61 : x
  2. Step 2: Convert to fraction form
    2,159.29/2,980.11 = 1,227.61/x
  3. Step 3: Cross multiply
    2,159.29x = 2,980.11 × 1,227.61
  4. Step 4: Simplify right side
    2,159.29x = 3,658,406.70
  5. Step 5: Solve for x
    x = 3,658,406.70/2,159.29
  6. Step 6: Final answer
    x = 1,694.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.