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Finding the Fourth Proportional to 2,828.76, 4,243.70 and 880.88

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Solution

The fourth proportional to 2,828.76, 4,243.70 and 880.88 is: 1,321.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.76 : 4,243.70 = 880.88 : x
  2. Step 2: Convert to fraction form
    2,828.76/4,243.70 = 880.88/x
  3. Step 3: Cross multiply
    2,828.76x = 4,243.70 × 880.88
  4. Step 4: Simplify right side
    2,828.76x = 3,738,190.46
  5. Step 5: Solve for x
    x = 3,738,190.46/2,828.76
  6. Step 6: Final answer
    x = 1,321.49

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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.