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Finding the Fourth Proportional to 6,392.68, 8,822.45 and 3,561.05

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Solution

The fourth proportional to 6,392.68, 8,822.45 and 3,561.05 is: 4,914.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.68 : 8,822.45 = 3,561.05 : x
  2. Step 2: Convert to fraction form
    6,392.68/8,822.45 = 3,561.05/x
  3. Step 3: Cross multiply
    6,392.68x = 8,822.45 × 3,561.05
  4. Step 4: Simplify right side
    6,392.68x = 31,417,185.57
  5. Step 5: Solve for x
    x = 31,417,185.57/6,392.68
  6. Step 6: Final answer
    x = 4,914.56

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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.