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Finding the Fourth Proportional to 9,956.38, 13,739.28 and 5,479.26

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Solution

The fourth proportional to 9,956.38, 13,739.28 and 5,479.26 is: 7,561.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,956.38 : 13,739.28 = 5,479.26 : x
  2. Step 2: Convert to fraction form
    9,956.38/13,739.28 = 5,479.26/x
  3. Step 3: Cross multiply
    9,956.38x = 13,739.28 × 5,479.26
  4. Step 4: Simplify right side
    9,956.38x = 75,281,087.33
  5. Step 5: Solve for x
    x = 75,281,087.33/9,956.38
  6. Step 6: Final answer
    x = 7,561.09

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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.