Home / 1,518.98-2,273.60-787.55

Finding the Fourth Proportional to 1,518.98, 2,273.60 and 787.55

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Solution

The fourth proportional to 1,518.98, 2,273.60 and 787.55 is: 1,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.98 : 2,273.60 = 787.55 : x
  2. Step 2: Convert to fraction form
    1,518.98/2,273.60 = 787.55/x
  3. Step 3: Cross multiply
    1,518.98x = 2,273.60 × 787.55
  4. Step 4: Simplify right side
    1,518.98x = 1,790,558.37
  5. Step 5: Solve for x
    x = 1,790,558.37/1,518.98
  6. Step 6: Final answer
    x = 1,178.79

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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.