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Finding the Fourth Proportional to 5,640.70, 8,444.85 and 3,453.70

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Solution

The fourth proportional to 5,640.70, 8,444.85 and 3,453.70 is: 5,170.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.70 : 8,444.85 = 3,453.70 : x
  2. Step 2: Convert to fraction form
    5,640.70/8,444.85 = 3,453.70/x
  3. Step 3: Cross multiply
    5,640.70x = 8,444.85 × 3,453.70
  4. Step 4: Simplify right side
    5,640.70x = 29,165,978.45
  5. Step 5: Solve for x
    x = 29,165,978.45/5,640.70
  6. Step 6: Final answer
    x = 5,170.63

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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.