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Finding the Fourth Proportional to 6,416.92, 8,851.96 and 4,321.72

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Solution

The fourth proportional to 6,416.92, 8,851.96 and 4,321.72 is: 5,961.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,416.92 : 8,851.96 = 4,321.72 : x
  2. Step 2: Convert to fraction form
    6,416.92/8,851.96 = 4,321.72/x
  3. Step 3: Cross multiply
    6,416.92x = 8,851.96 × 4,321.72
  4. Step 4: Simplify right side
    6,416.92x = 38,255,692.57
  5. Step 5: Solve for x
    x = 38,255,692.57/6,416.92
  6. Step 6: Final answer
    x = 5,961.69

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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.