Home / 3,311.52-4,968-1,120.32

Finding the Fourth Proportional to 3,311.52, 4,968 and 1,120.32

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Solution

The fourth proportional to 3,311.52, 4,968 and 1,120.32 is: 1,680.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.52 : 4,968 = 1,120.32 : x
  2. Step 2: Convert to fraction form
    3,311.52/4,968 = 1,120.32/x
  3. Step 3: Cross multiply
    3,311.52x = 4,968 × 1,120.32
  4. Step 4: Simplify right side
    3,311.52x = 5,565,749.76
  5. Step 5: Solve for x
    x = 5,565,749.76/3,311.52
  6. Step 6: Final answer
    x = 1,680.72

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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.