Home / 2,640.06-3,643.56-1,975.75

Finding the Fourth Proportional to 2,640.06, 3,643.56 and 1,975.75

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Solution

The fourth proportional to 2,640.06, 3,643.56 and 1,975.75 is: 2,726.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.06 : 3,643.56 = 1,975.75 : x
  2. Step 2: Convert to fraction form
    2,640.06/3,643.56 = 1,975.75/x
  3. Step 3: Cross multiply
    2,640.06x = 3,643.56 × 1,975.75
  4. Step 4: Simplify right side
    2,640.06x = 7,198,754.56
  5. Step 5: Solve for x
    x = 7,198,754.56/2,640.06
  6. Step 6: Final answer
    x = 2,726.74

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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.