Home / 2,628.66-3,943.92-1,243.06

Finding the Fourth Proportional to 2,628.66, 3,943.92 and 1,243.06

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Solution

The fourth proportional to 2,628.66, 3,943.92 and 1,243.06 is: 1,865.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.66 : 3,943.92 = 1,243.06 : x
  2. Step 2: Convert to fraction form
    2,628.66/3,943.92 = 1,243.06/x
  3. Step 3: Cross multiply
    2,628.66x = 3,943.92 × 1,243.06
  4. Step 4: Simplify right side
    2,628.66x = 4,902,529.20
  5. Step 5: Solve for x
    x = 4,902,529.20/2,628.66
  6. Step 6: Final answer
    x = 1,865.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.