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Finding the Fourth Proportional to 6,609.80, 9,119.67 and 4,253.31

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Solution

The fourth proportional to 6,609.80, 9,119.67 and 4,253.31 is: 5,868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.80 : 9,119.67 = 4,253.31 : x
  2. Step 2: Convert to fraction form
    6,609.80/9,119.67 = 4,253.31/x
  3. Step 3: Cross multiply
    6,609.80x = 9,119.67 × 4,253.31
  4. Step 4: Simplify right side
    6,609.80x = 38,788,738.01
  5. Step 5: Solve for x
    x = 38,788,738.01/6,609.80
  6. Step 6: Final answer
    x = 5,868.37

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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.