Home / 5,515.11-7,610.82-2,997.21

Finding the Fourth Proportional to 5,515.11, 7,610.82 and 2,997.21

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Solution

The fourth proportional to 5,515.11, 7,610.82 and 2,997.21 is: 4,136.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.11 : 7,610.82 = 2,997.21 : x
  2. Step 2: Convert to fraction form
    5,515.11/7,610.82 = 2,997.21/x
  3. Step 3: Cross multiply
    5,515.11x = 7,610.82 × 2,997.21
  4. Step 4: Simplify right side
    5,515.11x = 22,811,225.81
  5. Step 5: Solve for x
    x = 22,811,225.81/5,515.11
  6. Step 6: Final answer
    x = 4,136.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.