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Finding the Fourth Proportional to 9,260.43, 12,776.22 and 5,278.67

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Solution

The fourth proportional to 9,260.43, 12,776.22 and 5,278.67 is: 7,282.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,260.43 : 12,776.22 = 5,278.67 : x
  2. Step 2: Convert to fraction form
    9,260.43/12,776.22 = 5,278.67/x
  3. Step 3: Cross multiply
    9,260.43x = 12,776.22 × 5,278.67
  4. Step 4: Simplify right side
    9,260.43x = 67,441,385.35
  5. Step 5: Solve for x
    x = 67,441,385.35/9,260.43
  6. Step 6: Final answer
    x = 7,282.75

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.