Home / 8,100.09-11,161.47-6,211.59

Finding the Fourth Proportional to 8,100.09, 11,161.47 and 6,211.59

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Solution

The fourth proportional to 8,100.09, 11,161.47 and 6,211.59 is: 8,559.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.09 : 11,161.47 = 6,211.59 : x
  2. Step 2: Convert to fraction form
    8,100.09/11,161.47 = 6,211.59/x
  3. Step 3: Cross multiply
    8,100.09x = 11,161.47 × 6,211.59
  4. Step 4: Simplify right side
    8,100.09x = 69,330,475.44
  5. Step 5: Solve for x
    x = 69,330,475.44/8,100.09
  6. Step 6: Final answer
    x = 8,559.22

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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.