Home / 6,645.20-9,170.25-3,661.31

Finding the Fourth Proportional to 6,645.20, 9,170.25 and 3,661.31

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Solution

The fourth proportional to 6,645.20, 9,170.25 and 3,661.31 is: 5,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.20 : 9,170.25 = 3,661.31 : x
  2. Step 2: Convert to fraction form
    6,645.20/9,170.25 = 3,661.31/x
  3. Step 3: Cross multiply
    6,645.20x = 9,170.25 × 3,661.31
  4. Step 4: Simplify right side
    6,645.20x = 33,575,082.18
  5. Step 5: Solve for x
    x = 33,575,082.18/6,645.20
  6. Step 6: Final answer
    x = 5,052.54

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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.