Home / 7,215.62-10,811.10-3,922.83

Finding the Fourth Proportional to 7,215.62, 10,811.10 and 3,922.83

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Solution

The fourth proportional to 7,215.62, 10,811.10 and 3,922.83 is: 5,877.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.62 : 10,811.10 = 3,922.83 : x
  2. Step 2: Convert to fraction form
    7,215.62/10,811.10 = 3,922.83/x
  3. Step 3: Cross multiply
    7,215.62x = 10,811.10 × 3,922.83
  4. Step 4: Simplify right side
    7,215.62x = 42,410,122.12
  5. Step 5: Solve for x
    x = 42,410,122.12/7,215.62
  6. Step 6: Final answer
    x = 5,877.55

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1.5x scale

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.