Home / 2,176.80-2,997.99-2,136.30

Finding the Fourth Proportional to 2,176.80, 2,997.99 and 2,136.30

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Solution

The fourth proportional to 2,176.80, 2,997.99 and 2,136.30 is: 2,942.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.80 : 2,997.99 = 2,136.30 : x
  2. Step 2: Convert to fraction form
    2,176.80/2,997.99 = 2,136.30/x
  3. Step 3: Cross multiply
    2,176.80x = 2,997.99 × 2,136.30
  4. Step 4: Simplify right side
    2,176.80x = 6,404,606.04
  5. Step 5: Solve for x
    x = 6,404,606.04/2,176.80
  6. Step 6: Final answer
    x = 2,942.21

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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.