Home / 3,410.25-5,115.38-945.09

Finding the Fourth Proportional to 3,410.25, 5,115.38 and 945.09

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Solution

The fourth proportional to 3,410.25, 5,115.38 and 945.09 is: 1,417.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,410.25 : 5,115.38 = 945.09 : x
  2. Step 2: Convert to fraction form
    3,410.25/5,115.38 = 945.09/x
  3. Step 3: Cross multiply
    3,410.25x = 5,115.38 × 945.09
  4. Step 4: Simplify right side
    3,410.25x = 4,834,494.48
  5. Step 5: Solve for x
    x = 4,834,494.48/3,410.25
  6. Step 6: Final answer
    x = 1,417.64

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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.