Home / 3,428.21-5,140.01-1,236.65

Finding the Fourth Proportional to 3,428.21, 5,140.01 and 1,236.65

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Solution

The fourth proportional to 3,428.21, 5,140.01 and 1,236.65 is: 1,854.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.21 : 5,140.01 = 1,236.65 : x
  2. Step 2: Convert to fraction form
    3,428.21/5,140.01 = 1,236.65/x
  3. Step 3: Cross multiply
    3,428.21x = 5,140.01 × 1,236.65
  4. Step 4: Simplify right side
    3,428.21x = 6,356,361.48
  5. Step 5: Solve for x
    x = 6,356,361.48/3,428.21
  6. Step 6: Final answer
    x = 1,854.14

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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.