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Finding the Fourth Proportional to 5,778.72, 7,990.92 and 5,517.36

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Solution

The fourth proportional to 5,778.72, 7,990.92 and 5,517.36 is: 7,629.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,778.72 : 7,990.92 = 5,517.36 : x
  2. Step 2: Convert to fraction form
    5,778.72/7,990.92 = 5,517.36/x
  3. Step 3: Cross multiply
    5,778.72x = 7,990.92 × 5,517.36
  4. Step 4: Simplify right side
    5,778.72x = 44,088,782.37
  5. Step 5: Solve for x
    x = 44,088,782.37/5,778.72
  6. Step 6: Final answer
    x = 7,629.51

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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.