Home / 3,619.48-5,429.21-1,428.14

Finding the Fourth Proportional to 3,619.48, 5,429.21 and 1,428.14

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Solution

The fourth proportional to 3,619.48, 5,429.21 and 1,428.14 is: 2,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.48 : 5,429.21 = 1,428.14 : x
  2. Step 2: Convert to fraction form
    3,619.48/5,429.21 = 1,428.14/x
  3. Step 3: Cross multiply
    3,619.48x = 5,429.21 × 1,428.14
  4. Step 4: Simplify right side
    3,619.48x = 7,753,689.11
  5. Step 5: Solve for x
    x = 7,753,689.11/3,619.48
  6. Step 6: Final answer
    x = 2,142.21

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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.