Home / 5,640.59-7,783.94-3,122.70

Finding the Fourth Proportional to 5,640.59, 7,783.94 and 3,122.70

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Solution

The fourth proportional to 5,640.59, 7,783.94 and 3,122.70 is: 4,309.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.59 : 7,783.94 = 3,122.70 : x
  2. Step 2: Convert to fraction form
    5,640.59/7,783.94 = 3,122.70/x
  3. Step 3: Cross multiply
    5,640.59x = 7,783.94 × 3,122.70
  4. Step 4: Simplify right side
    5,640.59x = 24,306,893.82
  5. Step 5: Solve for x
    x = 24,306,893.82/5,640.59
  6. Step 6: Final answer
    x = 4,309.29

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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.