Home / 3,160.18-4,742.39-1,311.27

Finding the Fourth Proportional to 3,160.18, 4,742.39 and 1,311.27

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Solution

The fourth proportional to 3,160.18, 4,742.39 and 1,311.27 is: 1,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.18 : 4,742.39 = 1,311.27 : x
  2. Step 2: Convert to fraction form
    3,160.18/4,742.39 = 1,311.27/x
  3. Step 3: Cross multiply
    3,160.18x = 4,742.39 × 1,311.27
  4. Step 4: Simplify right side
    3,160.18x = 6,218,553.74
  5. Step 5: Solve for x
    x = 6,218,553.74/3,160.18
  6. Step 6: Final answer
    x = 1,967.78

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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.