Home / 3,390.62-5,086.55-2,907.05

Finding the Fourth Proportional to 3,390.62, 5,086.55 and 2,907.05

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Solution

The fourth proportional to 3,390.62, 5,086.55 and 2,907.05 is: 4,361.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.62 : 5,086.55 = 2,907.05 : x
  2. Step 2: Convert to fraction form
    3,390.62/5,086.55 = 2,907.05/x
  3. Step 3: Cross multiply
    3,390.62x = 5,086.55 × 2,907.05
  4. Step 4: Simplify right side
    3,390.62x = 14,786,837.01
  5. Step 5: Solve for x
    x = 14,786,837.01/3,390.62
  6. Step 6: Final answer
    x = 4,361.11

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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.