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Finding the Fourth Proportional to 5,728.24, 7,900.48 and 3,739.44

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Solution

The fourth proportional to 5,728.24, 7,900.48 and 3,739.44 is: 5,157.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,728.24 : 7,900.48 = 3,739.44 : x
  2. Step 2: Convert to fraction form
    5,728.24/7,900.48 = 3,739.44/x
  3. Step 3: Cross multiply
    5,728.24x = 7,900.48 × 3,739.44
  4. Step 4: Simplify right side
    5,728.24x = 29,543,370.93
  5. Step 5: Solve for x
    x = 29,543,370.93/5,728.24
  6. Step 6: Final answer
    x = 5,157.50

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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.