Home / 7,136.10-9,846.66-3,991.68

Finding the Fourth Proportional to 7,136.10, 9,846.66 and 3,991.68

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Solution

The fourth proportional to 7,136.10, 9,846.66 and 3,991.68 is: 5,507.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.10 : 9,846.66 = 3,991.68 : x
  2. Step 2: Convert to fraction form
    7,136.10/9,846.66 = 3,991.68/x
  3. Step 3: Cross multiply
    7,136.10x = 9,846.66 × 3,991.68
  4. Step 4: Simplify right side
    7,136.10x = 39,304,715.79
  5. Step 5: Solve for x
    x = 39,304,715.79/7,136.10
  6. Step 6: Final answer
    x = 5,507.87

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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.