Home / 3,219.13-4,828.68-2,115.51

Finding the Fourth Proportional to 3,219.13, 4,828.68 and 2,115.51

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Solution

The fourth proportional to 3,219.13, 4,828.68 and 2,115.51 is: 3,173.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.13 : 4,828.68 = 2,115.51 : x
  2. Step 2: Convert to fraction form
    3,219.13/4,828.68 = 2,115.51/x
  3. Step 3: Cross multiply
    3,219.13x = 4,828.68 × 2,115.51
  4. Step 4: Simplify right side
    3,219.13x = 10,215,120.83
  5. Step 5: Solve for x
    x = 10,215,120.83/3,219.13
  6. Step 6: Final answer
    x = 3,173.26

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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.