Home / 5,128.91-7,077.99-3,005.97

Finding the Fourth Proportional to 5,128.91, 7,077.99 and 3,005.97

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Solution

The fourth proportional to 5,128.91, 7,077.99 and 3,005.97 is: 4,148.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.91 : 7,077.99 = 3,005.97 : x
  2. Step 2: Convert to fraction form
    5,128.91/7,077.99 = 3,005.97/x
  3. Step 3: Cross multiply
    5,128.91x = 7,077.99 × 3,005.97
  4. Step 4: Simplify right side
    5,128.91x = 21,276,225.60
  5. Step 5: Solve for x
    x = 21,276,225.60/5,128.91
  6. Step 6: Final answer
    x = 4,148.29

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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.