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Finding the Fourth Proportional to 6,392.79, 8,822.04 and 3,739.68

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Solution

The fourth proportional to 6,392.79, 8,822.04 and 3,739.68 is: 5,160.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.79 : 8,822.04 = 3,739.68 : x
  2. Step 2: Convert to fraction form
    6,392.79/8,822.04 = 3,739.68/x
  3. Step 3: Cross multiply
    6,392.79x = 8,822.04 × 3,739.68
  4. Step 4: Simplify right side
    6,392.79x = 32,991,628.60
  5. Step 5: Solve for x
    x = 32,991,628.60/6,392.79
  6. Step 6: Final answer
    x = 5,160.75

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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.