Home / 9,278.75-13,918.13-3,122.75

Finding the Fourth Proportional to 9,278.75, 13,918.13 and 3,122.75

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Solution

The fourth proportional to 9,278.75, 13,918.13 and 3,122.75 is: 4,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.75 : 13,918.13 = 3,122.75 : x
  2. Step 2: Convert to fraction form
    9,278.75/13,918.13 = 3,122.75/x
  3. Step 3: Cross multiply
    9,278.75x = 13,918.13 × 3,122.75
  4. Step 4: Simplify right side
    9,278.75x = 43,462,840.46
  5. Step 5: Solve for x
    x = 43,462,840.46/9,278.75
  6. Step 6: Final answer
    x = 4,684.13

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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.