Home / 1,942.31-2,917.55-1,478.48

Finding the Fourth Proportional to 1,942.31, 2,917.55 and 1,478.48

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Solution

The fourth proportional to 1,942.31, 2,917.55 and 1,478.48 is: 2,220.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.31 : 2,917.55 = 1,478.48 : x
  2. Step 2: Convert to fraction form
    1,942.31/2,917.55 = 1,478.48/x
  3. Step 3: Cross multiply
    1,942.31x = 2,917.55 × 1,478.48
  4. Step 4: Simplify right side
    1,942.31x = 4,313,528.43
  5. Step 5: Solve for x
    x = 4,313,528.43/1,942.31
  6. Step 6: Final answer
    x = 2,220.82

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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.