Home / 2,160.18-2,979.99-1,275.66

Finding the Fourth Proportional to 2,160.18, 2,979.99 and 1,275.66

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Solution

The fourth proportional to 2,160.18, 2,979.99 and 1,275.66 is: 1,759.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.18 : 2,979.99 = 1,275.66 : x
  2. Step 2: Convert to fraction form
    2,160.18/2,979.99 = 1,275.66/x
  3. Step 3: Cross multiply
    2,160.18x = 2,979.99 × 1,275.66
  4. Step 4: Simplify right side
    2,160.18x = 3,801,454.04
  5. Step 5: Solve for x
    x = 3,801,454.04/2,160.18
  6. Step 6: Final answer
    x = 1,759.79

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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.