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Finding the Fourth Proportional to 5,938.79, 8,911.29 and 4,308.79

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Solution

The fourth proportional to 5,938.79, 8,911.29 and 4,308.79 is: 6,465.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,938.79 : 8,911.29 = 4,308.79 : x
  2. Step 2: Convert to fraction form
    5,938.79/8,911.29 = 4,308.79/x
  3. Step 3: Cross multiply
    5,938.79x = 8,911.29 × 4,308.79
  4. Step 4: Simplify right side
    5,938.79x = 38,396,811.14
  5. Step 5: Solve for x
    x = 38,396,811.14/5,938.79
  6. Step 6: Final answer
    x = 6,465.43

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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.