Home / 2,254.75-3,111.55-1,260

Finding the Fourth Proportional to 2,254.75, 3,111.55 and 1,260

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Solution

The fourth proportional to 2,254.75, 3,111.55 and 1,260 is: 1,738.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,254.75 : 3,111.55 = 1,260 : x
  2. Step 2: Convert to fraction form
    2,254.75/3,111.55 = 1,260/x
  3. Step 3: Cross multiply
    2,254.75x = 3,111.55 × 1,260
  4. Step 4: Simplify right side
    2,254.75x = 3,920,549.85
  5. Step 5: Solve for x
    x = 3,920,549.85/2,254.75
  6. Step 6: Final answer
    x = 1,738.80

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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.