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Finding the Fourth Proportional to 3,705.78, 5,558.67 and 3,396.78

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Solution

The fourth proportional to 3,705.78, 5,558.67 and 3,396.78 is: 5,095.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.78 : 5,558.67 = 3,396.78 : x
  2. Step 2: Convert to fraction form
    3,705.78/5,558.67 = 3,396.78/x
  3. Step 3: Cross multiply
    3,705.78x = 5,558.67 × 3,396.78
  4. Step 4: Simplify right side
    3,705.78x = 18,881,579.08
  5. Step 5: Solve for x
    x = 18,881,579.08/3,705.78
  6. Step 6: Final answer
    x = 5,095.17

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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.