Home / 7,991.17-11,991.36-3,310.33

Finding the Fourth Proportional to 7,991.17, 11,991.36 and 3,310.33

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Solution

The fourth proportional to 7,991.17, 11,991.36 and 3,310.33 is: 4,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.17 : 11,991.36 = 3,310.33 : x
  2. Step 2: Convert to fraction form
    7,991.17/11,991.36 = 3,310.33/x
  3. Step 3: Cross multiply
    7,991.17x = 11,991.36 × 3,310.33
  4. Step 4: Simplify right side
    7,991.17x = 39,695,358.75
  5. Step 5: Solve for x
    x = 39,695,358.75/7,991.17
  6. Step 6: Final answer
    x = 4,967.40

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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.