Home / 7,415.32-11,119.74-3,520.84

Finding the Fourth Proportional to 7,415.32, 11,119.74 and 3,520.84

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Solution

The fourth proportional to 7,415.32, 11,119.74 and 3,520.84 is: 5,279.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.32 : 11,119.74 = 3,520.84 : x
  2. Step 2: Convert to fraction form
    7,415.32/11,119.74 = 3,520.84/x
  3. Step 3: Cross multiply
    7,415.32x = 11,119.74 × 3,520.84
  4. Step 4: Simplify right side
    7,415.32x = 39,150,825.38
  5. Step 5: Solve for x
    x = 39,150,825.38/7,415.32
  6. Step 6: Final answer
    x = 5,279.72

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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.