Home / 11,891.40-17,822.70-5,310.60

Finding the Fourth Proportional to 11,891.40, 17,822.70 and 5,310.60

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Solution

The fourth proportional to 11,891.40, 17,822.70 and 5,310.60 is: 7,959.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.40 : 17,822.70 = 5,310.60 : x
  2. Step 2: Convert to fraction form
    11,891.40/17,822.70 = 5,310.60/x
  3. Step 3: Cross multiply
    11,891.40x = 17,822.70 × 5,310.60
  4. Step 4: Simplify right side
    11,891.40x = 94,649,230.62
  5. Step 5: Solve for x
    x = 94,649,230.62/11,891.40
  6. Step 6: Final answer
    x = 7,959.47

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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.