Home / 5,078.65-7,613.19-1,789.64

Finding the Fourth Proportional to 5,078.65, 7,613.19 and 1,789.64

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Solution

The fourth proportional to 5,078.65, 7,613.19 and 1,789.64 is: 2,682.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.65 : 7,613.19 = 1,789.64 : x
  2. Step 2: Convert to fraction form
    5,078.65/7,613.19 = 1,789.64/x
  3. Step 3: Cross multiply
    5,078.65x = 7,613.19 × 1,789.64
  4. Step 4: Simplify right side
    5,078.65x = 13,624,902.66
  5. Step 5: Solve for x
    x = 13,624,902.66/5,078.65
  6. Step 6: Final answer
    x = 2,682.78

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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.