Home / 7,136.70-10,688.85-3,669.90

Finding the Fourth Proportional to 7,136.70, 10,688.85 and 3,669.90

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Solution

The fourth proportional to 7,136.70, 10,688.85 and 3,669.90 is: 5,496.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.70 : 10,688.85 = 3,669.90 : x
  2. Step 2: Convert to fraction form
    7,136.70/10,688.85 = 3,669.90/x
  3. Step 3: Cross multiply
    7,136.70x = 10,688.85 × 3,669.90
  4. Step 4: Simplify right side
    7,136.70x = 39,227,010.62
  5. Step 5: Solve for x
    x = 39,227,010.62/7,136.70
  6. Step 6: Final answer
    x = 5,496.52

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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.