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Finding the Fourth Proportional to 9,471.72, 13,071.14 and 5,279.88

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Solution

The fourth proportional to 9,471.72, 13,071.14 and 5,279.88 is: 7,286.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,471.72 : 13,071.14 = 5,279.88 : x
  2. Step 2: Convert to fraction form
    9,471.72/13,071.14 = 5,279.88/x
  3. Step 3: Cross multiply
    9,471.72x = 13,071.14 × 5,279.88
  4. Step 4: Simplify right side
    9,471.72x = 69,014,050.66
  5. Step 5: Solve for x
    x = 69,014,050.66/9,471.72
  6. Step 6: Final answer
    x = 7,286.33

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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.