Home / 2,749.82-4,123.89-2,311.20

Finding the Fourth Proportional to 2,749.82, 4,123.89 and 2,311.20

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Solution

The fourth proportional to 2,749.82, 4,123.89 and 2,311.20 is: 3,466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.82 : 4,123.89 = 2,311.20 : x
  2. Step 2: Convert to fraction form
    2,749.82/4,123.89 = 2,311.20/x
  3. Step 3: Cross multiply
    2,749.82x = 4,123.89 × 2,311.20
  4. Step 4: Simplify right side
    2,749.82x = 9,531,134.57
  5. Step 5: Solve for x
    x = 9,531,134.57/2,749.82
  6. Step 6: Final answer
    x = 3,466.10

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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.