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Finding the Fourth Proportional to 9,316.80, 12,856.80 and 5,954.88

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Solution

The fourth proportional to 9,316.80, 12,856.80 and 5,954.88 is: 8,217.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,316.80 : 12,856.80 = 5,954.88 : x
  2. Step 2: Convert to fraction form
    9,316.80/12,856.80 = 5,954.88/x
  3. Step 3: Cross multiply
    9,316.80x = 12,856.80 × 5,954.88
  4. Step 4: Simplify right side
    9,316.80x = 76,560,701.18
  5. Step 5: Solve for x
    x = 76,560,701.18/9,316.80
  6. Step 6: Final answer
    x = 8,217.49

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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.