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Finding the Fourth Proportional to 3,808.80, 5,679.06 and 3,774.84

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Solution

The fourth proportional to 3,808.80, 5,679.06 and 3,774.84 is: 5,628.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.80 : 5,679.06 = 3,774.84 : x
  2. Step 2: Convert to fraction form
    3,808.80/5,679.06 = 3,774.84/x
  3. Step 3: Cross multiply
    3,808.80x = 5,679.06 × 3,774.84
  4. Step 4: Simplify right side
    3,808.80x = 21,437,542.85
  5. Step 5: Solve for x
    x = 21,437,542.85/3,808.80
  6. Step 6: Final answer
    x = 5,628.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.