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Finding the Fourth Proportional to 5,391.27, 7,440.62 and 3,904.11

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Solution

The fourth proportional to 5,391.27, 7,440.62 and 3,904.11 is: 5,388.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.27 : 7,440.62 = 3,904.11 : x
  2. Step 2: Convert to fraction form
    5,391.27/7,440.62 = 3,904.11/x
  3. Step 3: Cross multiply
    5,391.27x = 7,440.62 × 3,904.11
  4. Step 4: Simplify right side
    5,391.27x = 29,048,979.43
  5. Step 5: Solve for x
    x = 29,048,979.43/5,391.27
  6. Step 6: Final answer
    x = 5,388.15

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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.