Home / 1,518.48-2,277.76-787.60

Finding the Fourth Proportional to 1,518.48, 2,277.76 and 787.60

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Solution

The fourth proportional to 1,518.48, 2,277.76 and 787.60 is: 1,181.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.48 : 2,277.76 = 787.60 : x
  2. Step 2: Convert to fraction form
    1,518.48/2,277.76 = 787.60/x
  3. Step 3: Cross multiply
    1,518.48x = 2,277.76 × 787.60
  4. Step 4: Simplify right side
    1,518.48x = 1,793,963.78
  5. Step 5: Solve for x
    x = 1,793,963.78/1,518.48
  6. Step 6: Final answer
    x = 1,181.42

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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.