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Finding the Fourth Proportional to 2,940.20, 4,411.04 and 2,076.20

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Solution

The fourth proportional to 2,940.20, 4,411.04 and 2,076.20 is: 3,114.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.20 : 4,411.04 = 2,076.20 : x
  2. Step 2: Convert to fraction form
    2,940.20/4,411.04 = 2,076.20/x
  3. Step 3: Cross multiply
    2,940.20x = 4,411.04 × 2,076.20
  4. Step 4: Simplify right side
    2,940.20x = 9,158,201.25
  5. Step 5: Solve for x
    x = 9,158,201.25/2,940.20
  6. Step 6: Final answer
    x = 3,114.82

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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.