Home / 5,171.36-7,136.62-2,813.65

Finding the Fourth Proportional to 5,171.36, 7,136.62 and 2,813.65

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Solution

The fourth proportional to 5,171.36, 7,136.62 and 2,813.65 is: 3,882.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.36 : 7,136.62 = 2,813.65 : x
  2. Step 2: Convert to fraction form
    5,171.36/7,136.62 = 2,813.65/x
  3. Step 3: Cross multiply
    5,171.36x = 7,136.62 × 2,813.65
  4. Step 4: Simplify right side
    5,171.36x = 20,079,925.99
  5. Step 5: Solve for x
    x = 20,079,925.99/5,171.36
  6. Step 6: Final answer
    x = 3,882.91

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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.