Home / 2,180.40-3,009.60-1,738.14

Finding the Fourth Proportional to 2,180.40, 3,009.60 and 1,738.14

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Solution

The fourth proportional to 2,180.40, 3,009.60 and 1,738.14 is: 2,399.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.40 : 3,009.60 = 1,738.14 : x
  2. Step 2: Convert to fraction form
    2,180.40/3,009.60 = 1,738.14/x
  3. Step 3: Cross multiply
    2,180.40x = 3,009.60 × 1,738.14
  4. Step 4: Simplify right side
    2,180.40x = 5,231,106.14
  5. Step 5: Solve for x
    x = 5,231,106.14/2,180.40
  6. Step 6: Final answer
    x = 2,399.15

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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.