Home / 5,191.12-7,786.53-2,071.91

Finding the Fourth Proportional to 5,191.12, 7,786.53 and 2,071.91

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Solution

The fourth proportional to 5,191.12, 7,786.53 and 2,071.91 is: 3,107.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.12 : 7,786.53 = 2,071.91 : x
  2. Step 2: Convert to fraction form
    5,191.12/7,786.53 = 2,071.91/x
  3. Step 3: Cross multiply
    5,191.12x = 7,786.53 × 2,071.91
  4. Step 4: Simplify right side
    5,191.12x = 16,133,008.84
  5. Step 5: Solve for x
    x = 16,133,008.84/5,191.12
  6. Step 6: Final answer
    x = 3,107.81

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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.