Home / 3,311.79-4,967.70-1,120.53

Finding the Fourth Proportional to 3,311.79, 4,967.70 and 1,120.53

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Solution

The fourth proportional to 3,311.79, 4,967.70 and 1,120.53 is: 1,680.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.79 : 4,967.70 = 1,120.53 : x
  2. Step 2: Convert to fraction form
    3,311.79/4,967.70 = 1,120.53/x
  3. Step 3: Cross multiply
    3,311.79x = 4,967.70 × 1,120.53
  4. Step 4: Simplify right side
    3,311.79x = 5,566,471.31
  5. Step 5: Solve for x
    x = 5,566,471.31/3,311.79
  6. Step 6: Final answer
    x = 1,680.81

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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.