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Finding the Fourth Proportional to 3,718.44, 5,165.01 and 3,658.86

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Solution

The fourth proportional to 3,718.44, 5,165.01 and 3,658.86 is: 5,082.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.44 : 5,165.01 = 3,658.86 : x
  2. Step 2: Convert to fraction form
    3,718.44/5,165.01 = 3,658.86/x
  3. Step 3: Cross multiply
    3,718.44x = 5,165.01 × 3,658.86
  4. Step 4: Simplify right side
    3,718.44x = 18,898,048.49
  5. Step 5: Solve for x
    x = 18,898,048.49/3,718.44
  6. Step 6: Final answer
    x = 5,082.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.