Home / 4,720.92-7,081.39-2,120.82

Finding the Fourth Proportional to 4,720.92, 7,081.39 and 2,120.82

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Solution

The fourth proportional to 4,720.92, 7,081.39 and 2,120.82 is: 3,181.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.92 : 7,081.39 = 2,120.82 : x
  2. Step 2: Convert to fraction form
    4,720.92/7,081.39 = 2,120.82/x
  3. Step 3: Cross multiply
    4,720.92x = 7,081.39 × 2,120.82
  4. Step 4: Simplify right side
    4,720.92x = 15,018,329.64
  5. Step 5: Solve for x
    x = 15,018,329.64/4,720.92
  6. Step 6: Final answer
    x = 3,181.23

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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.