Home / 1,518.82-2,276.40-787.98

Finding the Fourth Proportional to 1,518.82, 2,276.40 and 787.98

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Solution

The fourth proportional to 1,518.82, 2,276.40 and 787.98 is: 1,181.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.82 : 2,276.40 = 787.98 : x
  2. Step 2: Convert to fraction form
    1,518.82/2,276.40 = 787.98/x
  3. Step 3: Cross multiply
    1,518.82x = 2,276.40 × 787.98
  4. Step 4: Simplify right side
    1,518.82x = 1,793,757.67
  5. Step 5: Solve for x
    x = 1,793,757.67/1,518.82
  6. Step 6: Final answer
    x = 1,181.02

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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.