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Finding the Fourth Proportional to 3,777.91, 5,214.13 and 3,147.44

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Solution

The fourth proportional to 3,777.91, 5,214.13 and 3,147.44 is: 4,343.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,777.91 : 5,214.13 = 3,147.44 : x
  2. Step 2: Convert to fraction form
    3,777.91/5,214.13 = 3,147.44/x
  3. Step 3: Cross multiply
    3,777.91x = 5,214.13 × 3,147.44
  4. Step 4: Simplify right side
    3,777.91x = 16,411,127.39
  5. Step 5: Solve for x
    x = 16,411,127.39/3,777.91
  6. Step 6: Final answer
    x = 4,343.97

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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.