Home / 3,428.12-5,142.32-1,347.94

Finding the Fourth Proportional to 3,428.12, 5,142.32 and 1,347.94

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Solution

The fourth proportional to 3,428.12, 5,142.32 and 1,347.94 is: 2,021.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.12 : 5,142.32 = 1,347.94 : x
  2. Step 2: Convert to fraction form
    3,428.12/5,142.32 = 1,347.94/x
  3. Step 3: Cross multiply
    3,428.12x = 5,142.32 × 1,347.94
  4. Step 4: Simplify right side
    3,428.12x = 6,931,538.82
  5. Step 5: Solve for x
    x = 6,931,538.82/3,428.12
  6. Step 6: Final answer
    x = 2,021.97

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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.