Home / 2,809.37-3,871.76-2,251.68

Finding the Fourth Proportional to 2,809.37, 3,871.76 and 2,251.68

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Solution

The fourth proportional to 2,809.37, 3,871.76 and 2,251.68 is: 3,103.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.37 : 3,871.76 = 2,251.68 : x
  2. Step 2: Convert to fraction form
    2,809.37/3,871.76 = 2,251.68/x
  3. Step 3: Cross multiply
    2,809.37x = 3,871.76 × 2,251.68
  4. Step 4: Simplify right side
    2,809.37x = 8,717,953.30
  5. Step 5: Solve for x
    x = 8,717,953.30/2,809.37
  6. Step 6: Final answer
    x = 3,103.18

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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.