Home / 1,330.66-1,997.75-1,136.90

Finding the Fourth Proportional to 1,330.66, 1,997.75 and 1,136.90

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Solution

The fourth proportional to 1,330.66, 1,997.75 and 1,136.90 is: 1,706.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.66 : 1,997.75 = 1,136.90 : x
  2. Step 2: Convert to fraction form
    1,330.66/1,997.75 = 1,136.90/x
  3. Step 3: Cross multiply
    1,330.66x = 1,997.75 × 1,136.90
  4. Step 4: Simplify right side
    1,330.66x = 2,271,241.98
  5. Step 5: Solve for x
    x = 2,271,241.98/1,330.66
  6. Step 6: Final answer
    x = 1,706.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.