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Finding the Fourth Proportional to 2,828.40, 4,241.39 and 880.76

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Solution

The fourth proportional to 2,828.40, 4,241.39 and 880.76 is: 1,320.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.40 : 4,241.39 = 880.76 : x
  2. Step 2: Convert to fraction form
    2,828.40/4,241.39 = 880.76/x
  3. Step 3: Cross multiply
    2,828.40x = 4,241.39 × 880.76
  4. Step 4: Simplify right side
    2,828.40x = 3,735,621.05
  5. Step 5: Solve for x
    x = 3,735,621.05/2,828.40
  6. Step 6: Final answer
    x = 1,320.75

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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.