Home / 6,645.40-9,170.60-3,661.16

Finding the Fourth Proportional to 6,645.40, 9,170.60 and 3,661.16

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Solution

The fourth proportional to 6,645.40, 9,170.60 and 3,661.16 is: 5,052.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.40 : 9,170.60 = 3,661.16 : x
  2. Step 2: Convert to fraction form
    6,645.40/9,170.60 = 3,661.16/x
  3. Step 3: Cross multiply
    6,645.40x = 9,170.60 × 3,661.16
  4. Step 4: Simplify right side
    6,645.40x = 33,575,033.90
  5. Step 5: Solve for x
    x = 33,575,033.90/6,645.40
  6. Step 6: Final answer
    x = 5,052.38

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Half scale
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Double scale
Find fourth proportional to 6,646.40, 9,171.98 and 3,662.16
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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.