Home / 1,050.25-1,571.43-789.38

Finding the Fourth Proportional to 1,050.25, 1,571.43 and 789.38

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Solution

The fourth proportional to 1,050.25, 1,571.43 and 789.38 is: 1,181.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.25 : 1,571.43 = 789.38 : x
  2. Step 2: Convert to fraction form
    1,050.25/1,571.43 = 789.38/x
  3. Step 3: Cross multiply
    1,050.25x = 1,571.43 × 789.38
  4. Step 4: Simplify right side
    1,050.25x = 1,240,455.41
  5. Step 5: Solve for x
    x = 1,240,455.41/1,050.25
  6. Step 6: Final answer
    x = 1,181.10

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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.