Home / 3,120.48-4,679.52-1,172.28

Finding the Fourth Proportional to 3,120.48, 4,679.52 and 1,172.28

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Solution

The fourth proportional to 3,120.48, 4,679.52 and 1,172.28 is: 1,757.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.48 : 4,679.52 = 1,172.28 : x
  2. Step 2: Convert to fraction form
    3,120.48/4,679.52 = 1,172.28/x
  3. Step 3: Cross multiply
    3,120.48x = 4,679.52 × 1,172.28
  4. Step 4: Simplify right side
    3,120.48x = 5,485,707.71
  5. Step 5: Solve for x
    x = 5,485,707.71/3,120.48
  6. Step 6: Final answer
    x = 1,757.97

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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.