Home / 2,180.80-3,009.68-1,296.28

Finding the Fourth Proportional to 2,180.80, 3,009.68 and 1,296.28

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Solution

The fourth proportional to 2,180.80, 3,009.68 and 1,296.28 is: 1,788.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.80 : 3,009.68 = 1,296.28 : x
  2. Step 2: Convert to fraction form
    2,180.80/3,009.68 = 1,296.28/x
  3. Step 3: Cross multiply
    2,180.80x = 3,009.68 × 1,296.28
  4. Step 4: Simplify right side
    2,180.80x = 3,901,387.99
  5. Step 5: Solve for x
    x = 3,901,387.99/2,180.80
  6. Step 6: Final answer
    x = 1,788.97

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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.