Home / 3,428.28-5,140.80-1,347.66

Finding the Fourth Proportional to 3,428.28, 5,140.80 and 1,347.66

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Solution

The fourth proportional to 3,428.28, 5,140.80 and 1,347.66 is: 2,020.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.28 : 5,140.80 = 1,347.66 : x
  2. Step 2: Convert to fraction form
    3,428.28/5,140.80 = 1,347.66/x
  3. Step 3: Cross multiply
    3,428.28x = 5,140.80 × 1,347.66
  4. Step 4: Simplify right side
    3,428.28x = 6,928,050.53
  5. Step 5: Solve for x
    x = 6,928,050.53/3,428.28
  6. Step 6: Final answer
    x = 2,020.85

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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.