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Finding the Fourth Proportional to 7,662.23, 11,490.90 and 2,981.93

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Solution

The fourth proportional to 7,662.23, 11,490.90 and 2,981.93 is: 4,471.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,662.23 : 11,490.90 = 2,981.93 : x
  2. Step 2: Convert to fraction form
    7,662.23/11,490.90 = 2,981.93/x
  3. Step 3: Cross multiply
    7,662.23x = 11,490.90 × 2,981.93
  4. Step 4: Simplify right side
    7,662.23x = 34,265,059.44
  5. Step 5: Solve for x
    x = 34,265,059.44/7,662.23
  6. Step 6: Final answer
    x = 4,471.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.