Home / 2,638.26-3,641.36-2,195.73

Finding the Fourth Proportional to 2,638.26, 3,641.36 and 2,195.73

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Solution

The fourth proportional to 2,638.26, 3,641.36 and 2,195.73 is: 3,030.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.26 : 3,641.36 = 2,195.73 : x
  2. Step 2: Convert to fraction form
    2,638.26/3,641.36 = 2,195.73/x
  3. Step 3: Cross multiply
    2,638.26x = 3,641.36 × 2,195.73
  4. Step 4: Simplify right side
    2,638.26x = 7,995,432.41
  5. Step 5: Solve for x
    x = 7,995,432.41/2,638.26
  6. Step 6: Final answer
    x = 3,030.57

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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.