Home / 3,318.54-4,977.65-1,238.39

Finding the Fourth Proportional to 3,318.54, 4,977.65 and 1,238.39

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Solution

The fourth proportional to 3,318.54, 4,977.65 and 1,238.39 is: 1,857.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.54 : 4,977.65 = 1,238.39 : x
  2. Step 2: Convert to fraction form
    3,318.54/4,977.65 = 1,238.39/x
  3. Step 3: Cross multiply
    3,318.54x = 4,977.65 × 1,238.39
  4. Step 4: Simplify right side
    3,318.54x = 6,164,240.90
  5. Step 5: Solve for x
    x = 6,164,240.90/3,318.54
  6. Step 6: Final answer
    x = 1,857.52

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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.