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Finding the Fourth Proportional to 5,416.80, 7,475.21 and 2,932.80

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Solution

The fourth proportional to 5,416.80, 7,475.21 and 2,932.80 is: 4,047.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.80 : 7,475.21 = 2,932.80 : x
  2. Step 2: Convert to fraction form
    5,416.80/7,475.21 = 2,932.80/x
  3. Step 3: Cross multiply
    5,416.80x = 7,475.21 × 2,932.80
  4. Step 4: Simplify right side
    5,416.80x = 21,923,295.89
  5. Step 5: Solve for x
    x = 21,923,295.89/5,416.80
  6. Step 6: Final answer
    x = 4,047.28

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.