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Finding the Fourth Proportional to 7,955.76, 11,929.44 and 2,760.48

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Solution

The fourth proportional to 7,955.76, 11,929.44 and 2,760.48 is: 4,139.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.76 : 11,929.44 = 2,760.48 : x
  2. Step 2: Convert to fraction form
    7,955.76/11,929.44 = 2,760.48/x
  3. Step 3: Cross multiply
    7,955.76x = 11,929.44 × 2,760.48
  4. Step 4: Simplify right side
    7,955.76x = 32,930,980.53
  5. Step 5: Solve for x
    x = 32,930,980.53/7,955.76
  6. Step 6: Final answer
    x = 4,139.26

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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.