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Finding the Fourth Proportional to 9,965.14, 13,751.98 and 5,489.04

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Solution

The fourth proportional to 9,965.14, 13,751.98 and 5,489.04 is: 7,574.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,965.14 : 13,751.98 = 5,489.04 : x
  2. Step 2: Convert to fraction form
    9,965.14/13,751.98 = 5,489.04/x
  3. Step 3: Cross multiply
    9,965.14x = 13,751.98 × 5,489.04
  4. Step 4: Simplify right side
    9,965.14x = 75,485,206.15
  5. Step 5: Solve for x
    x = 75,485,206.15/9,965.14
  6. Step 6: Final answer
    x = 7,574.93

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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.