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Finding the Fourth Proportional to 7,470.80, 11,206.20 and 3,096.80

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Solution

The fourth proportional to 7,470.80, 11,206.20 and 3,096.80 is: 4,645.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,470.80 : 11,206.20 = 3,096.80 : x
  2. Step 2: Convert to fraction form
    7,470.80/11,206.20 = 3,096.80/x
  3. Step 3: Cross multiply
    7,470.80x = 11,206.20 × 3,096.80
  4. Step 4: Simplify right side
    7,470.80x = 34,703,360.16
  5. Step 5: Solve for x
    x = 34,703,360.16/7,470.80
  6. Step 6: Final answer
    x = 4,645.20

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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.