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Finding the Fourth Proportional to 6,395.43, 8,819.49 and 3,877.95

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Solution

The fourth proportional to 6,395.43, 8,819.49 and 3,877.95 is: 5,347.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,395.43 : 8,819.49 = 3,877.95 : x
  2. Step 2: Convert to fraction form
    6,395.43/8,819.49 = 3,877.95/x
  3. Step 3: Cross multiply
    6,395.43x = 8,819.49 × 3,877.95
  4. Step 4: Simplify right side
    6,395.43x = 34,201,541.25
  5. Step 5: Solve for x
    x = 34,201,541.25/6,395.43
  6. Step 6: Final answer
    x = 5,347.81

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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.