Home / 3,102.12-4,654.62-1,371.24

Finding the Fourth Proportional to 3,102.12, 4,654.62 and 1,371.24

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Solution

The fourth proportional to 3,102.12, 4,654.62 and 1,371.24 is: 2,057.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.12 : 4,654.62 = 1,371.24 : x
  2. Step 2: Convert to fraction form
    3,102.12/4,654.62 = 1,371.24/x
  3. Step 3: Cross multiply
    3,102.12x = 4,654.62 × 1,371.24
  4. Step 4: Simplify right side
    3,102.12x = 6,382,601.13
  5. Step 5: Solve for x
    x = 6,382,601.13/3,102.12
  6. Step 6: Final answer
    x = 2,057.50

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Double scale
Find fourth proportional to 3,103.12, 4,656.12 and 1,372.24
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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.