Home / 2,180.13-3,008.45-1,236.08

Finding the Fourth Proportional to 2,180.13, 3,008.45 and 1,236.08

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Solution

The fourth proportional to 2,180.13, 3,008.45 and 1,236.08 is: 1,705.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.13 : 3,008.45 = 1,236.08 : x
  2. Step 2: Convert to fraction form
    2,180.13/3,008.45 = 1,236.08/x
  3. Step 3: Cross multiply
    2,180.13x = 3,008.45 × 1,236.08
  4. Step 4: Simplify right side
    2,180.13x = 3,718,663.65
  5. Step 5: Solve for x
    x = 3,718,663.65/2,180.13
  6. Step 6: Final answer
    x = 1,705.71

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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.