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Finding the Fourth Proportional to 6,898.20, 9,519.63 and 3,914.12

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Solution

The fourth proportional to 6,898.20, 9,519.63 and 3,914.12 is: 5,401.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,898.20 : 9,519.63 = 3,914.12 : x
  2. Step 2: Convert to fraction form
    6,898.20/9,519.63 = 3,914.12/x
  3. Step 3: Cross multiply
    6,898.20x = 9,519.63 × 3,914.12
  4. Step 4: Simplify right side
    6,898.20x = 37,260,983.30
  5. Step 5: Solve for x
    x = 37,260,983.30/6,898.20
  6. Step 6: Final answer
    x = 5,401.55

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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.