Home / 3,429.80-5,145.32-2,618.16

Finding the Fourth Proportional to 3,429.80, 5,145.32 and 2,618.16

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Solution

The fourth proportional to 3,429.80, 5,145.32 and 2,618.16 is: 3,927.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.80 : 5,145.32 = 2,618.16 : x
  2. Step 2: Convert to fraction form
    3,429.80/5,145.32 = 2,618.16/x
  3. Step 3: Cross multiply
    3,429.80x = 5,145.32 × 2,618.16
  4. Step 4: Simplify right side
    3,429.80x = 13,471,271.01
  5. Step 5: Solve for x
    x = 13,471,271.01/3,429.80
  6. Step 6: Final answer
    x = 3,927.71

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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.