Home / 5,102.12-7,644.45-3,991.11

Finding the Fourth Proportional to 5,102.12, 7,644.45 and 3,991.11

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Solution

The fourth proportional to 5,102.12, 7,644.45 and 3,991.11 is: 5,979.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,102.12 : 7,644.45 = 3,991.11 : x
  2. Step 2: Convert to fraction form
    5,102.12/7,644.45 = 3,991.11/x
  3. Step 3: Cross multiply
    5,102.12x = 7,644.45 × 3,991.11
  4. Step 4: Simplify right side
    5,102.12x = 30,509,840.84
  5. Step 5: Solve for x
    x = 30,509,840.84/5,102.12
  6. Step 6: Final answer
    x = 5,979.84

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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.