Home / 5,136.34-7,700.48-2,172.36

Finding the Fourth Proportional to 5,136.34, 7,700.48 and 2,172.36

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Solution

The fourth proportional to 5,136.34, 7,700.48 and 2,172.36 is: 3,256.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.34 : 7,700.48 = 2,172.36 : x
  2. Step 2: Convert to fraction form
    5,136.34/7,700.48 = 2,172.36/x
  3. Step 3: Cross multiply
    5,136.34x = 7,700.48 × 2,172.36
  4. Step 4: Simplify right side
    5,136.34x = 16,728,184.62
  5. Step 5: Solve for x
    x = 16,728,184.62/5,136.34
  6. Step 6: Final answer
    x = 3,256.83

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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.