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Finding the Fourth Proportional to 3,268.43, 4,902.93 and 928.45

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Solution

The fourth proportional to 3,268.43, 4,902.93 and 928.45 is: 1,392.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,268.43 : 4,902.93 = 928.45 : x
  2. Step 2: Convert to fraction form
    3,268.43/4,902.93 = 928.45/x
  3. Step 3: Cross multiply
    3,268.43x = 4,902.93 × 928.45
  4. Step 4: Simplify right side
    3,268.43x = 4,552,125.36
  5. Step 5: Solve for x
    x = 4,552,125.36/3,268.43
  6. Step 6: Final answer
    x = 1,392.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.