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Finding the Fourth Proportional to 9,965.25, 13,752.07 and 5,489.01

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Solution

The fourth proportional to 9,965.25, 13,752.07 and 5,489.01 is: 7,574.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,965.25 : 13,752.07 = 5,489.01 : x
  2. Step 2: Convert to fraction form
    9,965.25/13,752.07 = 5,489.01/x
  3. Step 3: Cross multiply
    9,965.25x = 13,752.07 × 5,489.01
  4. Step 4: Simplify right side
    9,965.25x = 75,485,236.03
  5. Step 5: Solve for x
    x = 75,485,236.03/9,965.25
  6. Step 6: Final answer
    x = 7,574.85

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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.