Home / 8,136.80-11,224.49-5,147.45

Finding the Fourth Proportional to 8,136.80, 11,224.49 and 5,147.45

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Solution

The fourth proportional to 8,136.80, 11,224.49 and 5,147.45 is: 7,100.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.80 : 11,224.49 = 5,147.45 : x
  2. Step 2: Convert to fraction form
    8,136.80/11,224.49 = 5,147.45/x
  3. Step 3: Cross multiply
    8,136.80x = 11,224.49 × 5,147.45
  4. Step 4: Simplify right side
    8,136.80x = 57,777,419.19
  5. Step 5: Solve for x
    x = 57,777,419.19/8,136.80
  6. Step 6: Final answer
    x = 7,100.76

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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.