Home / 7,959.89-11,939.69-2,765.63

Finding the Fourth Proportional to 7,959.89, 11,939.69 and 2,765.63

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Solution

The fourth proportional to 7,959.89, 11,939.69 and 2,765.63 is: 4,148.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.89 : 11,939.69 = 2,765.63 : x
  2. Step 2: Convert to fraction form
    7,959.89/11,939.69 = 2,765.63/x
  3. Step 3: Cross multiply
    7,959.89x = 11,939.69 × 2,765.63
  4. Step 4: Simplify right side
    7,959.89x = 33,020,691.33
  5. Step 5: Solve for x
    x = 33,020,691.33/7,959.89
  6. Step 6: Final answer
    x = 4,148.39

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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.