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Finding the Fourth Proportional to 9,318.44, 12,859.44 and 5,339.36

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Solution

The fourth proportional to 9,318.44, 12,859.44 and 5,339.36 is: 7,368.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.44 : 12,859.44 = 5,339.36 : x
  2. Step 2: Convert to fraction form
    9,318.44/12,859.44 = 5,339.36/x
  3. Step 3: Cross multiply
    9,318.44x = 12,859.44 × 5,339.36
  4. Step 4: Simplify right side
    9,318.44x = 68,661,179.56
  5. Step 5: Solve for x
    x = 68,661,179.56/9,318.44
  6. Step 6: Final answer
    x = 7,368.31

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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.