Home / 7,760.24-11,640.72-3,081.20

Finding the Fourth Proportional to 7,760.24, 11,640.72 and 3,081.20

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Solution

The fourth proportional to 7,760.24, 11,640.72 and 3,081.20 is: 4,621.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,760.24 : 11,640.72 = 3,081.20 : x
  2. Step 2: Convert to fraction form
    7,760.24/11,640.72 = 3,081.20/x
  3. Step 3: Cross multiply
    7,760.24x = 11,640.72 × 3,081.20
  4. Step 4: Simplify right side
    7,760.24x = 35,867,386.46
  5. Step 5: Solve for x
    x = 35,867,386.46/7,760.24
  6. Step 6: Final answer
    x = 4,621.94

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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.