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Finding the Fourth Proportional to 5,294.90, 7,944.07 and 3,812.90

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Solution

The fourth proportional to 5,294.90, 7,944.07 and 3,812.90 is: 5,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,294.90 : 7,944.07 = 3,812.90 : x
  2. Step 2: Convert to fraction form
    5,294.90/7,944.07 = 3,812.90/x
  3. Step 3: Cross multiply
    5,294.90x = 7,944.07 × 3,812.90
  4. Step 4: Simplify right side
    5,294.90x = 30,289,969.13
  5. Step 5: Solve for x
    x = 30,289,969.13/5,294.90
  6. Step 6: Final answer
    x = 5,720.60

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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.