Home / 8,136.84-11,228.74-5,151.72

Finding the Fourth Proportional to 8,136.84, 11,228.74 and 5,151.72

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Solution

The fourth proportional to 8,136.84, 11,228.74 and 5,151.72 is: 7,109.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.84 : 11,228.74 = 5,151.72 : x
  2. Step 2: Convert to fraction form
    8,136.84/11,228.74 = 5,151.72/x
  3. Step 3: Cross multiply
    8,136.84x = 11,228.74 × 5,151.72
  4. Step 4: Simplify right side
    8,136.84x = 57,847,324.43
  5. Step 5: Solve for x
    x = 57,847,324.43/8,136.84
  6. Step 6: Final answer
    x = 7,109.31

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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.