Home / 5,185.68-7,781.75-2,107.68

Finding the Fourth Proportional to 5,185.68, 7,781.75 and 2,107.68

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Solution

The fourth proportional to 5,185.68, 7,781.75 and 2,107.68 is: 3,162.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.68 : 7,781.75 = 2,107.68 : x
  2. Step 2: Convert to fraction form
    5,185.68/7,781.75 = 2,107.68/x
  3. Step 3: Cross multiply
    5,185.68x = 7,781.75 × 2,107.68
  4. Step 4: Simplify right side
    5,185.68x = 16,401,428.30
  5. Step 5: Solve for x
    x = 16,401,428.30/5,185.68
  6. Step 6: Final answer
    x = 3,162.83

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1.5x scale

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.