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Finding the Fourth Proportional to 2,655.73, 3,981.84 and 1,485.85

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Solution

The fourth proportional to 2,655.73, 3,981.84 and 1,485.85 is: 2,227.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.73 : 3,981.84 = 1,485.85 : x
  2. Step 2: Convert to fraction form
    2,655.73/3,981.84 = 1,485.85/x
  3. Step 3: Cross multiply
    2,655.73x = 3,981.84 × 1,485.85
  4. Step 4: Simplify right side
    2,655.73x = 5,916,409.53
  5. Step 5: Solve for x
    x = 5,916,409.53/2,655.73
  6. Step 6: Final answer
    x = 2,227.79

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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.