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Finding the Fourth Proportional to 5,310.59, 7,971.39 and 5,191.45

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Solution

The fourth proportional to 5,310.59, 7,971.39 and 5,191.45 is: 7,792.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,310.59 : 7,971.39 = 5,191.45 : x
  2. Step 2: Convert to fraction form
    5,310.59/7,971.39 = 5,191.45/x
  3. Step 3: Cross multiply
    5,310.59x = 7,971.39 × 5,191.45
  4. Step 4: Simplify right side
    5,310.59x = 41,383,102.05
  5. Step 5: Solve for x
    x = 41,383,102.05/5,310.59
  6. Step 6: Final answer
    x = 7,792.57

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1.5x scale

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.