Home / 3,428.83-5,143.52-1,237.78

Finding the Fourth Proportional to 3,428.83, 5,143.52 and 1,237.78

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Solution

The fourth proportional to 3,428.83, 5,143.52 and 1,237.78 is: 1,856.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.83 : 5,143.52 = 1,237.78 : x
  2. Step 2: Convert to fraction form
    3,428.83/5,143.52 = 1,237.78/x
  3. Step 3: Cross multiply
    3,428.83x = 5,143.52 × 1,237.78
  4. Step 4: Simplify right side
    3,428.83x = 6,366,546.19
  5. Step 5: Solve for x
    x = 6,366,546.19/3,428.83
  6. Step 6: Final answer
    x = 1,856.77

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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.