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Finding the Fourth Proportional to 3,806.79, 5,712.08 and 2,571.49

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Solution

The fourth proportional to 3,806.79, 5,712.08 and 2,571.49 is: 3,858.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806.79 : 5,712.08 = 2,571.49 : x
  2. Step 2: Convert to fraction form
    3,806.79/5,712.08 = 2,571.49/x
  3. Step 3: Cross multiply
    3,806.79x = 5,712.08 × 2,571.49
  4. Step 4: Simplify right side
    3,806.79x = 14,688,556.60
  5. Step 5: Solve for x
    x = 14,688,556.60/3,806.79
  6. Step 6: Final answer
    x = 3,858.52

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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.