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Finding the Fourth Proportional to 9,388.95, 12,956.78 and 6,031.79

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Solution

The fourth proportional to 9,388.95, 12,956.78 and 6,031.79 is: 8,323.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,388.95 : 12,956.78 = 6,031.79 : x
  2. Step 2: Convert to fraction form
    9,388.95/12,956.78 = 6,031.79/x
  3. Step 3: Cross multiply
    9,388.95x = 12,956.78 × 6,031.79
  4. Step 4: Simplify right side
    9,388.95x = 78,152,481.09
  5. Step 5: Solve for x
    x = 78,152,481.09/9,388.95
  6. Step 6: Final answer
    x = 8,323.88

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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.