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Finding the Fourth Proportional to 2,851.92, 4,277.88 and 1,120.50

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Solution

The fourth proportional to 2,851.92, 4,277.88 and 1,120.50 is: 1,680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.92 : 4,277.88 = 1,120.50 : x
  2. Step 2: Convert to fraction form
    2,851.92/4,277.88 = 1,120.50/x
  3. Step 3: Cross multiply
    2,851.92x = 4,277.88 × 1,120.50
  4. Step 4: Simplify right side
    2,851.92x = 4,793,364.54
  5. Step 5: Solve for x
    x = 4,793,364.54/2,851.92
  6. Step 6: Final answer
    x = 1,680.75

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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.