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Finding the Fourth Proportional to 3,808.86, 5,690.24 and 3,787.26

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Solution

The fourth proportional to 3,808.86, 5,690.24 and 3,787.26 is: 5,657.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.86 : 5,690.24 = 3,787.26 : x
  2. Step 2: Convert to fraction form
    3,808.86/5,690.24 = 3,787.26/x
  3. Step 3: Cross multiply
    3,808.86x = 5,690.24 × 3,787.26
  4. Step 4: Simplify right side
    3,808.86x = 21,550,418.34
  5. Step 5: Solve for x
    x = 21,550,418.34/3,808.86
  6. Step 6: Final answer
    x = 5,657.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.