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Finding the Fourth Proportional to 7,351.97, 10,145.90 and 3,994.99

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Solution

The fourth proportional to 7,351.97, 10,145.90 and 3,994.99 is: 5,513.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,351.97 : 10,145.90 = 3,994.99 : x
  2. Step 2: Convert to fraction form
    7,351.97/10,145.90 = 3,994.99/x
  3. Step 3: Cross multiply
    7,351.97x = 10,145.90 × 3,994.99
  4. Step 4: Simplify right side
    7,351.97x = 40,532,753.66
  5. Step 5: Solve for x
    x = 40,532,753.66/7,351.97
  6. Step 6: Final answer
    x = 5,513.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.