Home / 5,640.67-7,783.87-3,122.60

Finding the Fourth Proportional to 5,640.67, 7,783.87 and 3,122.60

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Solution

The fourth proportional to 5,640.67, 7,783.87 and 3,122.60 is: 4,309.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.67 : 7,783.87 = 3,122.60 : x
  2. Step 2: Convert to fraction form
    5,640.67/7,783.87 = 3,122.60/x
  3. Step 3: Cross multiply
    5,640.67x = 7,783.87 × 3,122.60
  4. Step 4: Simplify right side
    5,640.67x = 24,305,949.46
  5. Step 5: Solve for x
    x = 24,305,949.46/5,640.67
  6. Step 6: Final answer
    x = 4,309.05

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1.5x scale

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.