Home / 1,959.48-2,940.43-1,220.54

Finding the Fourth Proportional to 1,959.48, 2,940.43 and 1,220.54

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Solution

The fourth proportional to 1,959.48, 2,940.43 and 1,220.54 is: 1,831.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.48 : 2,940.43 = 1,220.54 : x
  2. Step 2: Convert to fraction form
    1,959.48/2,940.43 = 1,220.54/x
  3. Step 3: Cross multiply
    1,959.48x = 2,940.43 × 1,220.54
  4. Step 4: Simplify right side
    1,959.48x = 3,588,905.53
  5. Step 5: Solve for x
    x = 3,588,905.53/1,959.48
  6. Step 6: Final answer
    x = 1,831.56

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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.