Home / 8,212.72-12,302.64-3,824.08

Finding the Fourth Proportional to 8,212.72, 12,302.64 and 3,824.08

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Solution

The fourth proportional to 8,212.72, 12,302.64 and 3,824.08 is: 5,728.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.72 : 12,302.64 = 3,824.08 : x
  2. Step 2: Convert to fraction form
    8,212.72/12,302.64 = 3,824.08/x
  3. Step 3: Cross multiply
    8,212.72x = 12,302.64 × 3,824.08
  4. Step 4: Simplify right side
    8,212.72x = 47,046,279.57
  5. Step 5: Solve for x
    x = 47,046,279.57/8,212.72
  6. Step 6: Final answer
    x = 5,728.47

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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.