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Finding the Fourth Proportional to 6,517.85, 8,991.32 and 4,279.41

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Solution

The fourth proportional to 6,517.85, 8,991.32 and 4,279.41 is: 5,903.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,517.85 : 8,991.32 = 4,279.41 : x
  2. Step 2: Convert to fraction form
    6,517.85/8,991.32 = 4,279.41/x
  3. Step 3: Cross multiply
    6,517.85x = 8,991.32 × 4,279.41
  4. Step 4: Simplify right side
    6,517.85x = 38,477,523.32
  5. Step 5: Solve for x
    x = 38,477,523.32/6,517.85
  6. Step 6: Final answer
    x = 5,903.41

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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.