Home / 1,050.30-1,447.70-839.79

Finding the Fourth Proportional to 1,050.30, 1,447.70 and 839.79

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Solution

The fourth proportional to 1,050.30, 1,447.70 and 839.79 is: 1,157.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.30 : 1,447.70 = 839.79 : x
  2. Step 2: Convert to fraction form
    1,050.30/1,447.70 = 839.79/x
  3. Step 3: Cross multiply
    1,050.30x = 1,447.70 × 839.79
  4. Step 4: Simplify right side
    1,050.30x = 1,215,759.78
  5. Step 5: Solve for x
    x = 1,215,759.78/1,050.30
  6. Step 6: Final answer
    x = 1,157.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.