Home / 3,085.49-4,255.57-2,731.79

Finding the Fourth Proportional to 3,085.49, 4,255.57 and 2,731.79

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Solution

The fourth proportional to 3,085.49, 4,255.57 and 2,731.79 is: 3,767.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.49 : 4,255.57 = 2,731.79 : x
  2. Step 2: Convert to fraction form
    3,085.49/4,255.57 = 2,731.79/x
  3. Step 3: Cross multiply
    3,085.49x = 4,255.57 × 2,731.79
  4. Step 4: Simplify right side
    3,085.49x = 11,625,323.57
  5. Step 5: Solve for x
    x = 11,625,323.57/3,085.49
  6. Step 6: Final answer
    x = 3,767.74

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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.