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Finding the Fourth Proportional to 3,950.08, 5,448 and 3,685.12

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Solution

The fourth proportional to 3,950.08, 5,448 and 3,685.12 is: 5,082.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.08 : 5,448 = 3,685.12 : x
  2. Step 2: Convert to fraction form
    3,950.08/5,448 = 3,685.12/x
  3. Step 3: Cross multiply
    3,950.08x = 5,448 × 3,685.12
  4. Step 4: Simplify right side
    3,950.08x = 20,076,533.76
  5. Step 5: Solve for x
    x = 20,076,533.76/3,950.08
  6. Step 6: Final answer
    x = 5,082.56

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Double scale
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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.