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Finding the Fourth Proportional to 3,296.40, 4,942.80 and 1,346.40

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Solution

The fourth proportional to 3,296.40, 4,942.80 and 1,346.40 is: 2,018.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,296.40 : 4,942.80 = 1,346.40 : x
  2. Step 2: Convert to fraction form
    3,296.40/4,942.80 = 1,346.40/x
  3. Step 3: Cross multiply
    3,296.40x = 4,942.80 × 1,346.40
  4. Step 4: Simplify right side
    3,296.40x = 6,654,985.92
  5. Step 5: Solve for x
    x = 6,654,985.92/3,296.40
  6. Step 6: Final answer
    x = 2,018.86

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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.