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Finding the Fourth Proportional to 3,374.15, 5,060.63 and 908.78

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Solution

The fourth proportional to 3,374.15, 5,060.63 and 908.78 is: 1,363.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,374.15 : 5,060.63 = 908.78 : x
  2. Step 2: Convert to fraction form
    3,374.15/5,060.63 = 908.78/x
  3. Step 3: Cross multiply
    3,374.15x = 5,060.63 × 908.78
  4. Step 4: Simplify right side
    3,374.15x = 4,598,969.48
  5. Step 5: Solve for x
    x = 4,598,969.48/3,374.15
  6. Step 6: Final answer
    x = 1,363.00

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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.