Home / 3,705.82-5,114.75-2,381.20

Finding the Fourth Proportional to 3,705.82, 5,114.75 and 2,381.20

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Solution

The fourth proportional to 3,705.82, 5,114.75 and 2,381.20 is: 3,286.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.82 : 5,114.75 = 2,381.20 : x
  2. Step 2: Convert to fraction form
    3,705.82/5,114.75 = 2,381.20/x
  3. Step 3: Cross multiply
    3,705.82x = 5,114.75 × 2,381.20
  4. Step 4: Simplify right side
    3,705.82x = 12,179,242.70
  5. Step 5: Solve for x
    x = 12,179,242.70/3,705.82
  6. Step 6: Final answer
    x = 3,286.52

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Half scale
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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.