Home / 6,310.20-8,708.31-3,921.49

Finding the Fourth Proportional to 6,310.20, 8,708.31 and 3,921.49

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Solution

The fourth proportional to 6,310.20, 8,708.31 and 3,921.49 is: 5,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,310.20 : 8,708.31 = 3,921.49 : x
  2. Step 2: Convert to fraction form
    6,310.20/8,708.31 = 3,921.49/x
  3. Step 3: Cross multiply
    6,310.20x = 8,708.31 × 3,921.49
  4. Step 4: Simplify right side
    6,310.20x = 34,149,561.47
  5. Step 5: Solve for x
    x = 34,149,561.47/6,310.20
  6. Step 6: Final answer
    x = 5,411.80

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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.