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Finding the Fourth Proportional to 7,606.20, 11,409.30 and 5,516.40

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Solution

The fourth proportional to 7,606.20, 11,409.30 and 5,516.40 is: 8,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,606.20 : 11,409.30 = 5,516.40 : x
  2. Step 2: Convert to fraction form
    7,606.20/11,409.30 = 5,516.40/x
  3. Step 3: Cross multiply
    7,606.20x = 11,409.30 × 5,516.40
  4. Step 4: Simplify right side
    7,606.20x = 62,938,262.52
  5. Step 5: Solve for x
    x = 62,938,262.52/7,606.20
  6. Step 6: Final answer
    x = 8,274.60

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