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Finding the Fourth Proportional to 3,188.54, 4,389.27 and 2,766.41

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Solution

The fourth proportional to 3,188.54, 4,389.27 and 2,766.41 is: 3,808.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.54 : 4,389.27 = 2,766.41 : x
  2. Step 2: Convert to fraction form
    3,188.54/4,389.27 = 2,766.41/x
  3. Step 3: Cross multiply
    3,188.54x = 4,389.27 × 2,766.41
  4. Step 4: Simplify right side
    3,188.54x = 12,142,531.39
  5. Step 5: Solve for x
    x = 12,142,531.39/3,188.54
  6. Step 6: Final answer
    x = 3,808.18

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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.