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Finding the Fourth Proportional to 6,645.58, 9,170.80 and 3,661.41

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Solution

The fourth proportional to 6,645.58, 9,170.80 and 3,661.41 is: 5,052.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.58 : 9,170.80 = 3,661.41 : x
  2. Step 2: Convert to fraction form
    6,645.58/9,170.80 = 3,661.41/x
  3. Step 3: Cross multiply
    6,645.58x = 9,170.80 × 3,661.41
  4. Step 4: Simplify right side
    6,645.58x = 33,578,058.83
  5. Step 5: Solve for x
    x = 33,578,058.83/6,645.58
  6. Step 6: Final answer
    x = 5,052.69

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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.