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Finding the Fourth Proportional to 7,798.20, 11,697.90 and 2,604.08

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Solution

The fourth proportional to 7,798.20, 11,697.90 and 2,604.08 is: 3,906.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,798.20 : 11,697.90 = 2,604.08 : x
  2. Step 2: Convert to fraction form
    7,798.20/11,697.90 = 2,604.08/x
  3. Step 3: Cross multiply
    7,798.20x = 11,697.90 × 2,604.08
  4. Step 4: Simplify right side
    7,798.20x = 30,462,267.43
  5. Step 5: Solve for x
    x = 30,462,267.43/7,798.20
  6. Step 6: Final answer
    x = 3,906.32

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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.