Home / 2,159.11-2,979.09-1,274.44

Finding the Fourth Proportional to 2,159.11, 2,979.09 and 1,274.44

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Solution

The fourth proportional to 2,159.11, 2,979.09 and 1,274.44 is: 1,758.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.11 : 2,979.09 = 1,274.44 : x
  2. Step 2: Convert to fraction form
    2,159.11/2,979.09 = 1,274.44/x
  3. Step 3: Cross multiply
    2,159.11x = 2,979.09 × 1,274.44
  4. Step 4: Simplify right side
    2,159.11x = 3,796,657.64
  5. Step 5: Solve for x
    x = 3,796,657.64/2,159.11
  6. Step 6: Final answer
    x = 1,758.44

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1.5x scale

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.