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Finding the Fourth Proportional to 6,665.75, 9,991.50 and 5,017.19

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Solution

The fourth proportional to 6,665.75, 9,991.50 and 5,017.19 is: 7,520.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.75 : 9,991.50 = 5,017.19 : x
  2. Step 2: Convert to fraction form
    6,665.75/9,991.50 = 5,017.19/x
  3. Step 3: Cross multiply
    6,665.75x = 9,991.50 × 5,017.19
  4. Step 4: Simplify right side
    6,665.75x = 50,129,203.93
  5. Step 5: Solve for x
    x = 50,129,203.93/6,665.75
  6. Step 6: Final answer
    x = 7,520.42

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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.