Home / 3,123.68-4,311.40-1,798.14

Finding the Fourth Proportional to 3,123.68, 4,311.40 and 1,798.14

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Solution

The fourth proportional to 3,123.68, 4,311.40 and 1,798.14 is: 2,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.68 : 4,311.40 = 1,798.14 : x
  2. Step 2: Convert to fraction form
    3,123.68/4,311.40 = 1,798.14/x
  3. Step 3: Cross multiply
    3,123.68x = 4,311.40 × 1,798.14
  4. Step 4: Simplify right side
    3,123.68x = 7,752,500.80
  5. Step 5: Solve for x
    x = 7,752,500.80/3,123.68
  6. Step 6: Final answer
    x = 2,481.85

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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.