Home / 2,159.66-2,979.50-1,275.14

Finding the Fourth Proportional to 2,159.66, 2,979.50 and 1,275.14

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Solution

The fourth proportional to 2,159.66, 2,979.50 and 1,275.14 is: 1,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.66 : 2,979.50 = 1,275.14 : x
  2. Step 2: Convert to fraction form
    2,159.66/2,979.50 = 1,275.14/x
  3. Step 3: Cross multiply
    2,159.66x = 2,979.50 × 1,275.14
  4. Step 4: Simplify right side
    2,159.66x = 3,799,279.63
  5. Step 5: Solve for x
    x = 3,799,279.63/2,159.66
  6. Step 6: Final answer
    x = 1,759.20

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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.