Home / 9,278.23-13,918.79-3,121.75

Finding the Fourth Proportional to 9,278.23, 13,918.79 and 3,121.75

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Solution

The fourth proportional to 9,278.23, 13,918.79 and 3,121.75 is: 4,683.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.23 : 13,918.79 = 3,121.75 : x
  2. Step 2: Convert to fraction form
    9,278.23/13,918.79 = 3,121.75/x
  3. Step 3: Cross multiply
    9,278.23x = 13,918.79 × 3,121.75
  4. Step 4: Simplify right side
    9,278.23x = 43,450,967.07
  5. Step 5: Solve for x
    x = 43,450,967.07/9,278.23
  6. Step 6: Final answer
    x = 4,683.11

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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.