Home / 6,609.05-9,120.56-3,776.80

Finding the Fourth Proportional to 6,609.05, 9,120.56 and 3,776.80

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Solution

The fourth proportional to 6,609.05, 9,120.56 and 3,776.80 is: 5,212.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.05 : 9,120.56 = 3,776.80 : x
  2. Step 2: Convert to fraction form
    6,609.05/9,120.56 = 3,776.80/x
  3. Step 3: Cross multiply
    6,609.05x = 9,120.56 × 3,776.80
  4. Step 4: Simplify right side
    6,609.05x = 34,446,531.01
  5. Step 5: Solve for x
    x = 34,446,531.01/6,609.05
  6. Step 6: Final answer
    x = 5,212.02

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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.