Home / 3,311.20-4,568.48-1,913.68

Finding the Fourth Proportional to 3,311.20, 4,568.48 and 1,913.68

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Solution

The fourth proportional to 3,311.20, 4,568.48 and 1,913.68 is: 2,640.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.20 : 4,568.48 = 1,913.68 : x
  2. Step 2: Convert to fraction form
    3,311.20/4,568.48 = 1,913.68/x
  3. Step 3: Cross multiply
    3,311.20x = 4,568.48 × 1,913.68
  4. Step 4: Simplify right side
    3,311.20x = 8,742,608.81
  5. Step 5: Solve for x
    x = 8,742,608.81/3,311.20
  6. Step 6: Final answer
    x = 2,640.31

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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.