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Finding the Fourth Proportional to 6,422.58, 8,859.54 and 3,769.47

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Solution

The fourth proportional to 6,422.58, 8,859.54 and 3,769.47 is: 5,199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.58 : 8,859.54 = 3,769.47 : x
  2. Step 2: Convert to fraction form
    6,422.58/8,859.54 = 3,769.47/x
  3. Step 3: Cross multiply
    6,422.58x = 8,859.54 × 3,769.47
  4. Step 4: Simplify right side
    6,422.58x = 33,395,770.24
  5. Step 5: Solve for x
    x = 33,395,770.24/6,422.58
  6. Step 6: Final answer
    x = 5,199.74

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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.