Home / 1,480.41-2,221.29-787.52

Finding the Fourth Proportional to 1,480.41, 2,221.29 and 787.52

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Solution

The fourth proportional to 1,480.41, 2,221.29 and 787.52 is: 1,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.41 : 2,221.29 = 787.52 : x
  2. Step 2: Convert to fraction form
    1,480.41/2,221.29 = 787.52/x
  3. Step 3: Cross multiply
    1,480.41x = 2,221.29 × 787.52
  4. Step 4: Simplify right side
    1,480.41x = 1,749,315.85
  5. Step 5: Solve for x
    x = 1,749,315.85/1,480.41
  6. Step 6: Final answer
    x = 1,181.64

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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.