Home / 2,738.31-3,772.29-2,178.60

Finding the Fourth Proportional to 2,738.31, 3,772.29 and 2,178.60

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Solution

The fourth proportional to 2,738.31, 3,772.29 and 2,178.60 is: 3,001.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.31 : 3,772.29 = 2,178.60 : x
  2. Step 2: Convert to fraction form
    2,738.31/3,772.29 = 2,178.60/x
  3. Step 3: Cross multiply
    2,738.31x = 3,772.29 × 2,178.60
  4. Step 4: Simplify right side
    2,738.31x = 8,218,310.99
  5. Step 5: Solve for x
    x = 8,218,310.99/2,738.31
  6. Step 6: Final answer
    x = 3,001.23

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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.