Home / 5,631.05-7,771.40-3,113.75

Finding the Fourth Proportional to 5,631.05, 7,771.40 and 3,113.75

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Solution

The fourth proportional to 5,631.05, 7,771.40 and 3,113.75 is: 4,297.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.05 : 7,771.40 = 3,113.75 : x
  2. Step 2: Convert to fraction form
    5,631.05/7,771.40 = 3,113.75/x
  3. Step 3: Cross multiply
    5,631.05x = 7,771.40 × 3,113.75
  4. Step 4: Simplify right side
    5,631.05x = 24,198,142.32
  5. Step 5: Solve for x
    x = 24,198,142.32/5,631.05
  6. Step 6: Final answer
    x = 4,297.27

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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.