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Finding the Fourth Proportional to 7,959.76, 11,939.51 and 2,765.50

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Solution

The fourth proportional to 7,959.76, 11,939.51 and 2,765.50 is: 4,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.76 : 11,939.51 = 2,765.50 : x
  2. Step 2: Convert to fraction form
    7,959.76/11,939.51 = 2,765.50/x
  3. Step 3: Cross multiply
    7,959.76x = 11,939.51 × 2,765.50
  4. Step 4: Simplify right side
    7,959.76x = 33,018,701.08
  5. Step 5: Solve for x
    x = 33,018,701.08/7,959.76
  6. Step 6: Final answer
    x = 4,148.20

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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.