Home / 5,101.12-7,635.80-3,928.10

Finding the Fourth Proportional to 5,101.12, 7,635.80 and 3,928.10

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Solution

The fourth proportional to 5,101.12, 7,635.80 and 3,928.10 is: 5,879.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,101.12 : 7,635.80 = 3,928.10 : x
  2. Step 2: Convert to fraction form
    5,101.12/7,635.80 = 3,928.10/x
  3. Step 3: Cross multiply
    5,101.12x = 7,635.80 × 3,928.10
  4. Step 4: Simplify right side
    5,101.12x = 29,994,185.98
  5. Step 5: Solve for x
    x = 29,994,185.98/5,101.12
  6. Step 6: Final answer
    x = 5,879.92

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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.