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Finding the Fourth Proportional to 6,392.09, 8,820.99 and 3,559.41

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Solution

The fourth proportional to 6,392.09, 8,820.99 and 3,559.41 is: 4,911.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.09 : 8,820.99 = 3,559.41 : x
  2. Step 2: Convert to fraction form
    6,392.09/8,820.99 = 3,559.41/x
  3. Step 3: Cross multiply
    6,392.09x = 8,820.99 × 3,559.41
  4. Step 4: Simplify right side
    6,392.09x = 31,397,520.02
  5. Step 5: Solve for x
    x = 31,397,520.02/6,392.09
  6. Step 6: Final answer
    x = 4,911.93

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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.