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Finding the Fourth Proportional to 5,281.43, 7,916.42 and 3,433.86

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Solution

The fourth proportional to 5,281.43, 7,916.42 and 3,433.86 is: 5,147.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.43 : 7,916.42 = 3,433.86 : x
  2. Step 2: Convert to fraction form
    5,281.43/7,916.42 = 3,433.86/x
  3. Step 3: Cross multiply
    5,281.43x = 7,916.42 × 3,433.86
  4. Step 4: Simplify right side
    5,281.43x = 27,183,886.57
  5. Step 5: Solve for x
    x = 27,183,886.57/5,281.43
  6. Step 6: Final answer
    x = 5,147.07

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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.