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Finding the Fourth Proportional to 3,850.92, 5,308.74 and 2,745

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Solution

The fourth proportional to 3,850.92, 5,308.74 and 2,745 is: 3,784.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.92 : 5,308.74 = 2,745 : x
  2. Step 2: Convert to fraction form
    3,850.92/5,308.74 = 2,745/x
  3. Step 3: Cross multiply
    3,850.92x = 5,308.74 × 2,745
  4. Step 4: Simplify right side
    3,850.92x = 14,572,491.30
  5. Step 5: Solve for x
    x = 14,572,491.30/3,850.92
  6. Step 6: Final answer
    x = 3,784.16

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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.