Home / 3,077.28-4,615.92-1,128.96

Finding the Fourth Proportional to 3,077.28, 4,615.92 and 1,128.96

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Solution

The fourth proportional to 3,077.28, 4,615.92 and 1,128.96 is: 1,693.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.28 : 4,615.92 = 1,128.96 : x
  2. Step 2: Convert to fraction form
    3,077.28/4,615.92 = 1,128.96/x
  3. Step 3: Cross multiply
    3,077.28x = 4,615.92 × 1,128.96
  4. Step 4: Simplify right side
    3,077.28x = 5,211,189.04
  5. Step 5: Solve for x
    x = 5,211,189.04/3,077.28
  6. Step 6: Final answer
    x = 1,693.44

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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.