Home / 2,576.71-3,865.22-727.79

Finding the Fourth Proportional to 2,576.71, 3,865.22 and 727.79

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Solution

The fourth proportional to 2,576.71, 3,865.22 and 727.79 is: 1,091.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,576.71 : 3,865.22 = 727.79 : x
  2. Step 2: Convert to fraction form
    2,576.71/3,865.22 = 727.79/x
  3. Step 3: Cross multiply
    2,576.71x = 3,865.22 × 727.79
  4. Step 4: Simplify right side
    2,576.71x = 2,813,048.23
  5. Step 5: Solve for x
    x = 2,813,048.23/2,576.71
  6. Step 6: Final answer
    x = 1,091.72

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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.