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Finding the Fourth Proportional to 2,978.28, 4,109.92 and 1,652.04

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Solution

The fourth proportional to 2,978.28, 4,109.92 and 1,652.04 is: 2,279.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978.28 : 4,109.92 = 1,652.04 : x
  2. Step 2: Convert to fraction form
    2,978.28/4,109.92 = 1,652.04/x
  3. Step 3: Cross multiply
    2,978.28x = 4,109.92 × 1,652.04
  4. Step 4: Simplify right side
    2,978.28x = 6,789,752.24
  5. Step 5: Solve for x
    x = 6,789,752.24/2,978.28
  6. Step 6: Final answer
    x = 2,279.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.