Home / 5,136.20-7,086.06-3,368.78

Finding the Fourth Proportional to 5,136.20, 7,086.06 and 3,368.78

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Solution

The fourth proportional to 5,136.20, 7,086.06 and 3,368.78 is: 4,647.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.20 : 7,086.06 = 3,368.78 : x
  2. Step 2: Convert to fraction form
    5,136.20/7,086.06 = 3,368.78/x
  3. Step 3: Cross multiply
    5,136.20x = 7,086.06 × 3,368.78
  4. Step 4: Simplify right side
    5,136.20x = 23,871,377.21
  5. Step 5: Solve for x
    x = 23,871,377.21/5,136.20
  6. Step 6: Final answer
    x = 4,647.67

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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.