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Finding the Fourth Proportional to 9,341.76, 12,891.88 and 5,150.28

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Solution

The fourth proportional to 9,341.76, 12,891.88 and 5,150.28 is: 7,107.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,341.76 : 12,891.88 = 5,150.28 : x
  2. Step 2: Convert to fraction form
    9,341.76/12,891.88 = 5,150.28/x
  3. Step 3: Cross multiply
    9,341.76x = 12,891.88 × 5,150.28
  4. Step 4: Simplify right side
    9,341.76x = 66,396,791.73
  5. Step 5: Solve for x
    x = 66,396,791.73/9,341.76
  6. Step 6: Final answer
    x = 7,107.52

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1.5x scale

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.