Home / 7,418.20-11,121.54-4,787.32

Finding the Fourth Proportional to 7,418.20, 11,121.54 and 4,787.32

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Solution

The fourth proportional to 7,418.20, 11,121.54 and 4,787.32 is: 7,177.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,418.20 : 11,121.54 = 4,787.32 : x
  2. Step 2: Convert to fraction form
    7,418.20/11,121.54 = 4,787.32/x
  3. Step 3: Cross multiply
    7,418.20x = 11,121.54 × 4,787.32
  4. Step 4: Simplify right side
    7,418.20x = 53,242,370.87
  5. Step 5: Solve for x
    x = 53,242,370.87/7,418.20
  6. Step 6: Final answer
    x = 7,177.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.