Home / 6,456.30-9,688.05-2,757.90

Finding the Fourth Proportional to 6,456.30, 9,688.05 and 2,757.90

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Solution

The fourth proportional to 6,456.30, 9,688.05 and 2,757.90 is: 4,138.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,456.30 : 9,688.05 = 2,757.90 : x
  2. Step 2: Convert to fraction form
    6,456.30/9,688.05 = 2,757.90/x
  3. Step 3: Cross multiply
    6,456.30x = 9,688.05 × 2,757.90
  4. Step 4: Simplify right side
    6,456.30x = 26,718,673.10
  5. Step 5: Solve for x
    x = 26,718,673.10/6,456.30
  6. Step 6: Final answer
    x = 4,138.39

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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.