Home / 9,136.16-13,706.40-3,939.20

Finding the Fourth Proportional to 9,136.16, 13,706.40 and 3,939.20

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Solution

The fourth proportional to 9,136.16, 13,706.40 and 3,939.20 is: 5,909.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,136.16 : 13,706.40 = 3,939.20 : x
  2. Step 2: Convert to fraction form
    9,136.16/13,706.40 = 3,939.20/x
  3. Step 3: Cross multiply
    9,136.16x = 13,706.40 × 3,939.20
  4. Step 4: Simplify right side
    9,136.16x = 53,992,250.88
  5. Step 5: Solve for x
    x = 53,992,250.88/9,136.16
  6. Step 6: Final answer
    x = 5,909.73

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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.