Home / 3,420.14-5,115.62-2,100.65

Finding the Fourth Proportional to 3,420.14, 5,115.62 and 2,100.65

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Solution

The fourth proportional to 3,420.14, 5,115.62 and 2,100.65 is: 3,142.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.14 : 5,115.62 = 2,100.65 : x
  2. Step 2: Convert to fraction form
    3,420.14/5,115.62 = 2,100.65/x
  3. Step 3: Cross multiply
    3,420.14x = 5,115.62 × 2,100.65
  4. Step 4: Simplify right side
    3,420.14x = 10,746,106.83
  5. Step 5: Solve for x
    x = 10,746,106.83/3,420.14
  6. Step 6: Final answer
    x = 3,142.01

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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.