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Finding the Fourth Proportional to 2,069.78, 3,104.46 and 608.84

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Solution

The fourth proportional to 2,069.78, 3,104.46 and 608.84 is: 913.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,069.78 : 3,104.46 = 608.84 : x
  2. Step 2: Convert to fraction form
    2,069.78/3,104.46 = 608.84/x
  3. Step 3: Cross multiply
    2,069.78x = 3,104.46 × 608.84
  4. Step 4: Simplify right side
    2,069.78x = 1,890,119.43
  5. Step 5: Solve for x
    x = 1,890,119.43/2,069.78
  6. Step 6: Final answer
    x = 913.20

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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.