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Finding the Fourth Proportional to 3,957.92, 5,449.43 and 3,485.49

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Solution

The fourth proportional to 3,957.92, 5,449.43 and 3,485.49 is: 4,798.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.92 : 5,449.43 = 3,485.49 : x
  2. Step 2: Convert to fraction form
    3,957.92/5,449.43 = 3,485.49/x
  3. Step 3: Cross multiply
    3,957.92x = 5,449.43 × 3,485.49
  4. Step 4: Simplify right side
    3,957.92x = 18,993,916.34
  5. Step 5: Solve for x
    x = 18,993,916.34/3,957.92
  6. Step 6: Final answer
    x = 4,798.97

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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.