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Finding the Fourth Proportional to 9,340.53, 12,882.29 and 6,819.81

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Solution

The fourth proportional to 9,340.53, 12,882.29 and 6,819.81 is: 9,405.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,340.53 : 12,882.29 = 6,819.81 : x
  2. Step 2: Convert to fraction form
    9,340.53/12,882.29 = 6,819.81/x
  3. Step 3: Cross multiply
    9,340.53x = 12,882.29 × 6,819.81
  4. Step 4: Simplify right side
    9,340.53x = 87,854,736.07
  5. Step 5: Solve for x
    x = 87,854,736.07/9,340.53
  6. Step 6: Final answer
    x = 9,405.75

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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.