Home / 8,065.10-11,149.80-7,991.22

Finding the Fourth Proportional to 8,065.10, 11,149.80 and 7,991.22

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Solution

The fourth proportional to 8,065.10, 11,149.80 and 7,991.22 is: 11,047.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065.10 : 11,149.80 = 7,991.22 : x
  2. Step 2: Convert to fraction form
    8,065.10/11,149.80 = 7,991.22/x
  3. Step 3: Cross multiply
    8,065.10x = 11,149.80 × 7,991.22
  4. Step 4: Simplify right side
    8,065.10x = 89,100,504.76
  5. Step 5: Solve for x
    x = 89,100,504.76/8,065.10
  6. Step 6: Final answer
    x = 11,047.66

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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.