Home / 2,166.78-3,250.15-1,126.25

Finding the Fourth Proportional to 2,166.78, 3,250.15 and 1,126.25

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Solution

The fourth proportional to 2,166.78, 3,250.15 and 1,126.25 is: 1,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.78 : 3,250.15 = 1,126.25 : x
  2. Step 2: Convert to fraction form
    2,166.78/3,250.15 = 1,126.25/x
  3. Step 3: Cross multiply
    2,166.78x = 3,250.15 × 1,126.25
  4. Step 4: Simplify right side
    2,166.78x = 3,660,481.44
  5. Step 5: Solve for x
    x = 3,660,481.44/2,166.78
  6. Step 6: Final answer
    x = 1,689.36

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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.