Home / 5,128.62-7,073.97-3,140.16

Finding the Fourth Proportional to 5,128.62, 7,073.97 and 3,140.16

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Solution

The fourth proportional to 5,128.62, 7,073.97 and 3,140.16 is: 4,331.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.62 : 7,073.97 = 3,140.16 : x
  2. Step 2: Convert to fraction form
    5,128.62/7,073.97 = 3,140.16/x
  3. Step 3: Cross multiply
    5,128.62x = 7,073.97 × 3,140.16
  4. Step 4: Simplify right side
    5,128.62x = 22,213,362.27
  5. Step 5: Solve for x
    x = 22,213,362.27/5,128.62
  6. Step 6: Final answer
    x = 4,331.26

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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.