Home / 3,929.10-5,889.52-1,428.63

Finding the Fourth Proportional to 3,929.10, 5,889.52 and 1,428.63

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Solution

The fourth proportional to 3,929.10, 5,889.52 and 1,428.63 is: 2,141.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.10 : 5,889.52 = 1,428.63 : x
  2. Step 2: Convert to fraction form
    3,929.10/5,889.52 = 1,428.63/x
  3. Step 3: Cross multiply
    3,929.10x = 5,889.52 × 1,428.63
  4. Step 4: Simplify right side
    3,929.10x = 8,413,944.96
  5. Step 5: Solve for x
    x = 8,413,944.96/3,929.10
  6. Step 6: Final answer
    x = 2,141.44

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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.