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Finding the Fourth Proportional to 5,390.26, 7,442.22 and 3,974.11

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Solution

The fourth proportional to 5,390.26, 7,442.22 and 3,974.11 is: 5,486.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.26 : 7,442.22 = 3,974.11 : x
  2. Step 2: Convert to fraction form
    5,390.26/7,442.22 = 3,974.11/x
  3. Step 3: Cross multiply
    5,390.26x = 7,442.22 × 3,974.11
  4. Step 4: Simplify right side
    5,390.26x = 29,576,200.92
  5. Step 5: Solve for x
    x = 29,576,200.92/5,390.26
  6. Step 6: Final answer
    x = 5,486.97

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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.