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Finding the Fourth Proportional to 5,291.28, 7,944.12 and 2,696.08

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Solution

The fourth proportional to 5,291.28, 7,944.12 and 2,696.08 is: 4,047.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.28 : 7,944.12 = 2,696.08 : x
  2. Step 2: Convert to fraction form
    5,291.28/7,944.12 = 2,696.08/x
  3. Step 3: Cross multiply
    5,291.28x = 7,944.12 × 2,696.08
  4. Step 4: Simplify right side
    5,291.28x = 21,417,983.05
  5. Step 5: Solve for x
    x = 21,417,983.05/5,291.28
  6. Step 6: Final answer
    x = 4,047.79

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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.