Home / 3,318.92-4,977.60-1,239.13

Finding the Fourth Proportional to 3,318.92, 4,977.60 and 1,239.13

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Solution

The fourth proportional to 3,318.92, 4,977.60 and 1,239.13 is: 1,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.92 : 4,977.60 = 1,239.13 : x
  2. Step 2: Convert to fraction form
    3,318.92/4,977.60 = 1,239.13/x
  3. Step 3: Cross multiply
    3,318.92x = 4,977.60 × 1,239.13
  4. Step 4: Simplify right side
    3,318.92x = 6,167,893.49
  5. Step 5: Solve for x
    x = 6,167,893.49/3,318.92
  6. Step 6: Final answer
    x = 1,858.40

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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.