Home / 3,410.38-5,115.58-945.21

Finding the Fourth Proportional to 3,410.38, 5,115.58 and 945.21

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Solution

The fourth proportional to 3,410.38, 5,115.58 and 945.21 is: 1,417.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,410.38 : 5,115.58 = 945.21 : x
  2. Step 2: Convert to fraction form
    3,410.38/5,115.58 = 945.21/x
  3. Step 3: Cross multiply
    3,410.38x = 5,115.58 × 945.21
  4. Step 4: Simplify right side
    3,410.38x = 4,835,297.37
  5. Step 5: Solve for x
    x = 4,835,297.37/3,410.38
  6. Step 6: Final answer
    x = 1,417.82

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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.