Home / 2,180.66-3,009.38-1,236.39

Finding the Fourth Proportional to 2,180.66, 3,009.38 and 1,236.39

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Solution

The fourth proportional to 2,180.66, 3,009.38 and 1,236.39 is: 1,706.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.66 : 3,009.38 = 1,236.39 : x
  2. Step 2: Convert to fraction form
    2,180.66/3,009.38 = 1,236.39/x
  3. Step 3: Cross multiply
    2,180.66x = 3,009.38 × 1,236.39
  4. Step 4: Simplify right side
    2,180.66x = 3,720,761.16
  5. Step 5: Solve for x
    x = 3,720,761.16/2,180.66
  6. Step 6: Final answer
    x = 1,706.26

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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.