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Finding the Fourth Proportional to 5,261.78, 7,261.14 and 2,904.14

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Solution

The fourth proportional to 5,261.78, 7,261.14 and 2,904.14 is: 4,007.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.78 : 7,261.14 = 2,904.14 : x
  2. Step 2: Convert to fraction form
    5,261.78/7,261.14 = 2,904.14/x
  3. Step 3: Cross multiply
    5,261.78x = 7,261.14 × 2,904.14
  4. Step 4: Simplify right side
    5,261.78x = 21,087,367.12
  5. Step 5: Solve for x
    x = 21,087,367.12/5,261.78
  6. Step 6: Final answer
    x = 4,007.65

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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.