Home / 7,212.21-10,815.66-2,530.95

Finding the Fourth Proportional to 7,212.21, 10,815.66 and 2,530.95

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Solution

The fourth proportional to 7,212.21, 10,815.66 and 2,530.95 is: 3,795.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.21 : 10,815.66 = 2,530.95 : x
  2. Step 2: Convert to fraction form
    7,212.21/10,815.66 = 2,530.95/x
  3. Step 3: Cross multiply
    7,212.21x = 10,815.66 × 2,530.95
  4. Step 4: Simplify right side
    7,212.21x = 27,373,894.68
  5. Step 5: Solve for x
    x = 27,373,894.68/7,212.21
  6. Step 6: Final answer
    x = 3,795.49

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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.