Home / 1,281.80-1,919.82-1,254.44

Finding the Fourth Proportional to 1,281.80, 1,919.82 and 1,254.44

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Solution

The fourth proportional to 1,281.80, 1,919.82 and 1,254.44 is: 1,878.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.80 : 1,919.82 = 1,254.44 : x
  2. Step 2: Convert to fraction form
    1,281.80/1,919.82 = 1,254.44/x
  3. Step 3: Cross multiply
    1,281.80x = 1,919.82 × 1,254.44
  4. Step 4: Simplify right side
    1,281.80x = 2,408,299.00
  5. Step 5: Solve for x
    x = 2,408,299.00/1,281.80
  6. Step 6: Final answer
    x = 1,878.84

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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.