Home / 2,661.26-3,988.45-1,838.22

Finding the Fourth Proportional to 2,661.26, 3,988.45 and 1,838.22

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Solution

The fourth proportional to 2,661.26, 3,988.45 and 1,838.22 is: 2,754.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661.26 : 3,988.45 = 1,838.22 : x
  2. Step 2: Convert to fraction form
    2,661.26/3,988.45 = 1,838.22/x
  3. Step 3: Cross multiply
    2,661.26x = 3,988.45 × 1,838.22
  4. Step 4: Simplify right side
    2,661.26x = 7,331,648.56
  5. Step 5: Solve for x
    x = 7,331,648.56/2,661.26
  6. Step 6: Final answer
    x = 2,754.95

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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.