Home / 6,420.41-8,860.21-3,625.91

Finding the Fourth Proportional to 6,420.41, 8,860.21 and 3,625.91

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Solution

The fourth proportional to 6,420.41, 8,860.21 and 3,625.91 is: 5,003.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.41 : 8,860.21 = 3,625.91 : x
  2. Step 2: Convert to fraction form
    6,420.41/8,860.21 = 3,625.91/x
  3. Step 3: Cross multiply
    6,420.41x = 8,860.21 × 3,625.91
  4. Step 4: Simplify right side
    6,420.41x = 32,126,270.68
  5. Step 5: Solve for x
    x = 32,126,270.68/6,420.41
  6. Step 6: Final answer
    x = 5,003.78

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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.