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Finding the Fourth Proportional to 6,645.62, 9,170.52 and 3,661.22

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Solution

The fourth proportional to 6,645.62, 9,170.52 and 3,661.22 is: 5,052.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.62 : 9,170.52 = 3,661.22 : x
  2. Step 2: Convert to fraction form
    6,645.62/9,170.52 = 3,661.22/x
  3. Step 3: Cross multiply
    6,645.62x = 9,170.52 × 3,661.22
  4. Step 4: Simplify right side
    6,645.62x = 33,575,291.23
  5. Step 5: Solve for x
    x = 33,575,291.23/6,645.62
  6. Step 6: Final answer
    x = 5,052.24

Related Problems

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Half scale
Find fourth proportional to 13,291.24, 18,341.04 and 7,322.44
Double scale
Find fourth proportional to 6,646.62, 9,171.90 and 3,662.22
Similar ratio
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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.