Home / 8,199.80-11,312.32-5,217.28

Finding the Fourth Proportional to 8,199.80, 11,312.32 and 5,217.28

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Solution

The fourth proportional to 8,199.80, 11,312.32 and 5,217.28 is: 7,197.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,199.80 : 11,312.32 = 5,217.28 : x
  2. Step 2: Convert to fraction form
    8,199.80/11,312.32 = 5,217.28/x
  3. Step 3: Cross multiply
    8,199.80x = 11,312.32 × 5,217.28
  4. Step 4: Simplify right side
    8,199.80x = 59,019,540.89
  5. Step 5: Solve for x
    x = 59,019,540.89/8,199.80
  6. Step 6: Final answer
    x = 7,197.68

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1.5x scale

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.