Home / 3,320.38-4,980.66-1,858.39

Finding the Fourth Proportional to 3,320.38, 4,980.66 and 1,858.39

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Solution

The fourth proportional to 3,320.38, 4,980.66 and 1,858.39 is: 2,787.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.38 : 4,980.66 = 1,858.39 : x
  2. Step 2: Convert to fraction form
    3,320.38/4,980.66 = 1,858.39/x
  3. Step 3: Cross multiply
    3,320.38x = 4,980.66 × 1,858.39
  4. Step 4: Simplify right side
    3,320.38x = 9,255,983.83
  5. Step 5: Solve for x
    x = 9,255,983.83/3,320.38
  6. Step 6: Final answer
    x = 2,787.63

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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.