Home / 5,329.60-7,991.76-3,109.22

Finding the Fourth Proportional to 5,329.60, 7,991.76 and 3,109.22

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Solution

The fourth proportional to 5,329.60, 7,991.76 and 3,109.22 is: 4,662.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,329.60 : 7,991.76 = 3,109.22 : x
  2. Step 2: Convert to fraction form
    5,329.60/7,991.76 = 3,109.22/x
  3. Step 3: Cross multiply
    5,329.60x = 7,991.76 × 3,109.22
  4. Step 4: Simplify right side
    5,329.60x = 24,848,141.70
  5. Step 5: Solve for x
    x = 24,848,141.70/5,329.60
  6. Step 6: Final answer
    x = 4,662.29

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1.5x scale

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.