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Finding the Fourth Proportional to 1,976.28, 2,961.99 and 1,051.80

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Solution

The fourth proportional to 1,976.28, 2,961.99 and 1,051.80 is: 1,576.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.28 : 2,961.99 = 1,051.80 : x
  2. Step 2: Convert to fraction form
    1,976.28/2,961.99 = 1,051.80/x
  3. Step 3: Cross multiply
    1,976.28x = 2,961.99 × 1,051.80
  4. Step 4: Simplify right side
    1,976.28x = 3,115,421.08
  5. Step 5: Solve for x
    x = 3,115,421.08/1,976.28
  6. Step 6: Final answer
    x = 1,576.41

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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.