Home / 1,481.07-2,220.01-787.04

Finding the Fourth Proportional to 1,481.07, 2,220.01 and 787.04

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Solution

The fourth proportional to 1,481.07, 2,220.01 and 787.04 is: 1,179.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.07 : 2,220.01 = 787.04 : x
  2. Step 2: Convert to fraction form
    1,481.07/2,220.01 = 787.04/x
  3. Step 3: Cross multiply
    1,481.07x = 2,220.01 × 787.04
  4. Step 4: Simplify right side
    1,481.07x = 1,747,228.81
  5. Step 5: Solve for x
    x = 1,747,228.81/1,481.07
  6. Step 6: Final answer
    x = 1,179.71

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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.