Home / 7,520.42-11,282.25-3,138.32

Finding the Fourth Proportional to 7,520.42, 11,282.25 and 3,138.32

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Solution

The fourth proportional to 7,520.42, 11,282.25 and 3,138.32 is: 4,708.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.42 : 11,282.25 = 3,138.32 : x
  2. Step 2: Convert to fraction form
    7,520.42/11,282.25 = 3,138.32/x
  3. Step 3: Cross multiply
    7,520.42x = 11,282.25 × 3,138.32
  4. Step 4: Simplify right side
    7,520.42x = 35,407,310.82
  5. Step 5: Solve for x
    x = 35,407,310.82/7,520.42
  6. Step 6: Final answer
    x = 4,708.16

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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.