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Finding the Fourth Proportional to 9,797.90, 13,520.86 and 5,605.88

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Solution

The fourth proportional to 9,797.90, 13,520.86 and 5,605.88 is: 7,735.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,797.90 : 13,520.86 = 5,605.88 : x
  2. Step 2: Convert to fraction form
    9,797.90/13,520.86 = 5,605.88/x
  3. Step 3: Cross multiply
    9,797.90x = 13,520.86 × 5,605.88
  4. Step 4: Simplify right side
    9,797.90x = 75,796,237.04
  5. Step 5: Solve for x
    x = 75,796,237.04/9,797.90
  6. Step 6: Final answer
    x = 7,735.97

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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.