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Finding the Fourth Proportional to 6,348.87, 8,762.85 and 3,994.20

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Solution

The fourth proportional to 6,348.87, 8,762.85 and 3,994.20 is: 5,512.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,348.87 : 8,762.85 = 3,994.20 : x
  2. Step 2: Convert to fraction form
    6,348.87/8,762.85 = 3,994.20/x
  3. Step 3: Cross multiply
    6,348.87x = 8,762.85 × 3,994.20
  4. Step 4: Simplify right side
    6,348.87x = 35,000,575.47
  5. Step 5: Solve for x
    x = 35,000,575.47/6,348.87
  6. Step 6: Final answer
    x = 5,512.88

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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.