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Finding the Fourth Proportional to 5,521.88, 7,621.62 and 3,843.56

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Solution

The fourth proportional to 5,521.88, 7,621.62 and 3,843.56 is: 5,305.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.88 : 7,621.62 = 3,843.56 : x
  2. Step 2: Convert to fraction form
    5,521.88/7,621.62 = 3,843.56/x
  3. Step 3: Cross multiply
    5,521.88x = 7,621.62 × 3,843.56
  4. Step 4: Simplify right side
    5,521.88x = 29,294,153.77
  5. Step 5: Solve for x
    x = 29,294,153.77/5,521.88
  6. Step 6: Final answer
    x = 5,305.11

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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.