Home / 2,311.20-3,465.60-849.60

Finding the Fourth Proportional to 2,311.20, 3,465.60 and 849.60

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Solution

The fourth proportional to 2,311.20, 3,465.60 and 849.60 is: 1,273.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.20 : 3,465.60 = 849.60 : x
  2. Step 2: Convert to fraction form
    2,311.20/3,465.60 = 849.60/x
  3. Step 3: Cross multiply
    2,311.20x = 3,465.60 × 849.60
  4. Step 4: Simplify right side
    2,311.20x = 2,944,373.76
  5. Step 5: Solve for x
    x = 2,944,373.76/2,311.20
  6. Step 6: Final answer
    x = 1,273.96

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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.