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Finding the Fourth Proportional to 3,238.96, 4,858.40 and 930.46

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Solution

The fourth proportional to 3,238.96, 4,858.40 and 930.46 is: 1,395.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.96 : 4,858.40 = 930.46 : x
  2. Step 2: Convert to fraction form
    3,238.96/4,858.40 = 930.46/x
  3. Step 3: Cross multiply
    3,238.96x = 4,858.40 × 930.46
  4. Step 4: Simplify right side
    3,238.96x = 4,520,546.86
  5. Step 5: Solve for x
    x = 4,520,546.86/3,238.96
  6. Step 6: Final answer
    x = 1,395.68

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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.