Home / 9,231.40-13,838.10-5,278.60

Finding the Fourth Proportional to 9,231.40, 13,838.10 and 5,278.60

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Solution

The fourth proportional to 9,231.40, 13,838.10 and 5,278.60 is: 7,912.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,231.40 : 13,838.10 = 5,278.60 : x
  2. Step 2: Convert to fraction form
    9,231.40/13,838.10 = 5,278.60/x
  3. Step 3: Cross multiply
    9,231.40x = 13,838.10 × 5,278.60
  4. Step 4: Simplify right side
    9,231.40x = 73,045,794.66
  5. Step 5: Solve for x
    x = 73,045,794.66/9,231.40
  6. Step 6: Final answer
    x = 7,912.75

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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.