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Finding the Fourth Proportional to 2,980.29, 4,470.54 and 789.03

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Solution

The fourth proportional to 2,980.29, 4,470.54 and 789.03 is: 1,183.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.29 : 4,470.54 = 789.03 : x
  2. Step 2: Convert to fraction form
    2,980.29/4,470.54 = 789.03/x
  3. Step 3: Cross multiply
    2,980.29x = 4,470.54 × 789.03
  4. Step 4: Simplify right side
    2,980.29x = 3,527,390.18
  5. Step 5: Solve for x
    x = 3,527,390.18/2,980.29
  6. Step 6: Final answer
    x = 1,183.57

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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.