Home / 8,644.28-12,933.70-5,136.17

Finding the Fourth Proportional to 8,644.28, 12,933.70 and 5,136.17

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Solution

The fourth proportional to 8,644.28, 12,933.70 and 5,136.17 is: 7,684.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,644.28 : 12,933.70 = 5,136.17 : x
  2. Step 2: Convert to fraction form
    8,644.28/12,933.70 = 5,136.17/x
  3. Step 3: Cross multiply
    8,644.28x = 12,933.70 × 5,136.17
  4. Step 4: Simplify right side
    8,644.28x = 66,429,604.42
  5. Step 5: Solve for x
    x = 66,429,604.42/8,644.28
  6. Step 6: Final answer
    x = 7,684.81

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1.5x scale

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.