Home / 7,770.30-11,648.42-2,838.78

Finding the Fourth Proportional to 7,770.30, 11,648.42 and 2,838.78

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Solution

The fourth proportional to 7,770.30, 11,648.42 and 2,838.78 is: 4,255.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.30 : 11,648.42 = 2,838.78 : x
  2. Step 2: Convert to fraction form
    7,770.30/11,648.42 = 2,838.78/x
  3. Step 3: Cross multiply
    7,770.30x = 11,648.42 × 2,838.78
  4. Step 4: Simplify right side
    7,770.30x = 33,067,287.53
  5. Step 5: Solve for x
    x = 33,067,287.53/7,770.30
  6. Step 6: Final answer
    x = 4,255.60

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1.5x scale

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.