Home / 2,254.78-3,111.51-1,260.03

Finding the Fourth Proportional to 2,254.78, 3,111.51 and 1,260.03

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Solution

The fourth proportional to 2,254.78, 3,111.51 and 1,260.03 is: 1,738.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,254.78 : 3,111.51 = 1,260.03 : x
  2. Step 2: Convert to fraction form
    2,254.78/3,111.51 = 1,260.03/x
  3. Step 3: Cross multiply
    2,254.78x = 3,111.51 × 1,260.03
  4. Step 4: Simplify right side
    2,254.78x = 3,920,595.95
  5. Step 5: Solve for x
    x = 3,920,595.95/2,254.78
  6. Step 6: Final answer
    x = 1,738.79

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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.