Home / 3,422.70-5,135.67-1,963.08

Finding the Fourth Proportional to 3,422.70, 5,135.67 and 1,963.08

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Solution

The fourth proportional to 3,422.70, 5,135.67 and 1,963.08 is: 2,945.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.70 : 5,135.67 = 1,963.08 : x
  2. Step 2: Convert to fraction form
    3,422.70/5,135.67 = 1,963.08/x
  3. Step 3: Cross multiply
    3,422.70x = 5,135.67 × 1,963.08
  4. Step 4: Simplify right side
    3,422.70x = 10,081,731.06
  5. Step 5: Solve for x
    x = 10,081,731.06/3,422.70
  6. Step 6: Final answer
    x = 2,945.55

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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.