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Finding the Fourth Proportional to 5,474.88, 7,555.34 and 2,990.88

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Solution

The fourth proportional to 5,474.88, 7,555.34 and 2,990.88 is: 4,127.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,474.88 : 7,555.34 = 2,990.88 : x
  2. Step 2: Convert to fraction form
    5,474.88/7,555.34 = 2,990.88/x
  3. Step 3: Cross multiply
    5,474.88x = 7,555.34 × 2,990.88
  4. Step 4: Simplify right side
    5,474.88x = 22,597,115.30
  5. Step 5: Solve for x
    x = 22,597,115.30/5,474.88
  6. Step 6: Final answer
    x = 4,127.42

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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.