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Finding the Fourth Proportional to 2,470.22, 3,705.33 and 930.86

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Solution

The fourth proportional to 2,470.22, 3,705.33 and 930.86 is: 1,396.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,470.22 : 3,705.33 = 930.86 : x
  2. Step 2: Convert to fraction form
    2,470.22/3,705.33 = 930.86/x
  3. Step 3: Cross multiply
    2,470.22x = 3,705.33 × 930.86
  4. Step 4: Simplify right side
    2,470.22x = 3,449,143.48
  5. Step 5: Solve for x
    x = 3,449,143.48/2,470.22
  6. Step 6: Final answer
    x = 1,396.29

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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.