Home / 5,405.29-8,109.17-2,285.56

Finding the Fourth Proportional to 5,405.29, 8,109.17 and 2,285.56

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Solution

The fourth proportional to 5,405.29, 8,109.17 and 2,285.56 is: 3,428.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.29 : 8,109.17 = 2,285.56 : x
  2. Step 2: Convert to fraction form
    5,405.29/8,109.17 = 2,285.56/x
  3. Step 3: Cross multiply
    5,405.29x = 8,109.17 × 2,285.56
  4. Step 4: Simplify right side
    5,405.29x = 18,533,983.16
  5. Step 5: Solve for x
    x = 18,533,983.16/5,405.29
  6. Step 6: Final answer
    x = 3,428.86

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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.