Home / 6,609.88-9,119.82-4,090.78

Finding the Fourth Proportional to 6,609.88, 9,119.82 and 4,090.78

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Solution

The fourth proportional to 6,609.88, 9,119.82 and 4,090.78 is: 5,644.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.88 : 9,119.82 = 4,090.78 : x
  2. Step 2: Convert to fraction form
    6,609.88/9,119.82 = 4,090.78/x
  3. Step 3: Cross multiply
    6,609.88x = 9,119.82 × 4,090.78
  4. Step 4: Simplify right side
    6,609.88x = 37,307,177.26
  5. Step 5: Solve for x
    x = 37,307,177.26/6,609.88
  6. Step 6: Final answer
    x = 5,644.15

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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.