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Finding the Fourth Proportional to 9,333.14, 12,879.20 and 5,353.88

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Solution

The fourth proportional to 9,333.14, 12,879.20 and 5,353.88 is: 7,388.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,333.14 : 12,879.20 = 5,353.88 : x
  2. Step 2: Convert to fraction form
    9,333.14/12,879.20 = 5,353.88/x
  3. Step 3: Cross multiply
    9,333.14x = 12,879.20 × 5,353.88
  4. Step 4: Simplify right side
    9,333.14x = 68,953,640.28
  5. Step 5: Solve for x
    x = 68,953,640.28/9,333.14
  6. Step 6: Final answer
    x = 7,388.05

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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.