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Finding the Fourth Proportional to 3,447.72, 5,171.49 and 1,256.49

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Solution

The fourth proportional to 3,447.72, 5,171.49 and 1,256.49 is: 1,884.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.72 : 5,171.49 = 1,256.49 : x
  2. Step 2: Convert to fraction form
    3,447.72/5,171.49 = 1,256.49/x
  3. Step 3: Cross multiply
    3,447.72x = 5,171.49 × 1,256.49
  4. Step 4: Simplify right side
    3,447.72x = 6,497,925.47
  5. Step 5: Solve for x
    x = 6,497,925.47/3,447.72
  6. Step 6: Final answer
    x = 1,884.70

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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.