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Finding the Fourth Proportional to 6,393.45, 8,820.84 and 3,738.98

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Solution

The fourth proportional to 6,393.45, 8,820.84 and 3,738.98 is: 5,158.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,393.45 : 8,820.84 = 3,738.98 : x
  2. Step 2: Convert to fraction form
    6,393.45/8,820.84 = 3,738.98/x
  3. Step 3: Cross multiply
    6,393.45x = 8,820.84 × 3,738.98
  4. Step 4: Simplify right side
    6,393.45x = 32,980,900.24
  5. Step 5: Solve for x
    x = 32,980,900.24/6,393.45
  6. Step 6: Final answer
    x = 5,158.55

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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.