Home / 8,190.39-12,285.59-3,507.38

Finding the Fourth Proportional to 8,190.39, 12,285.59 and 3,507.38

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Solution

The fourth proportional to 8,190.39, 12,285.59 and 3,507.38 is: 5,261.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.39 : 12,285.59 = 3,507.38 : x
  2. Step 2: Convert to fraction form
    8,190.39/12,285.59 = 3,507.38/x
  3. Step 3: Cross multiply
    8,190.39x = 12,285.59 × 3,507.38
  4. Step 4: Simplify right side
    8,190.39x = 43,090,153.69
  5. Step 5: Solve for x
    x = 43,090,153.69/8,190.39
  6. Step 6: Final answer
    x = 5,261.06

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.