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Finding the Fourth Proportional to 10,080.78, 15,121.16 and 4,883

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Solution

The fourth proportional to 10,080.78, 15,121.16 and 4,883 is: 7,324.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.78 : 15,121.16 = 4,883 : x
  2. Step 2: Convert to fraction form
    10,080.78/15,121.16 = 4,883/x
  3. Step 3: Cross multiply
    10,080.78x = 15,121.16 × 4,883
  4. Step 4: Simplify right side
    10,080.78x = 73,836,624.28
  5. Step 5: Solve for x
    x = 73,836,624.28/10,080.78
  6. Step 6: Final answer
    x = 7,324.50

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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.