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Finding the Fourth Proportional to 1,976.68, 2,967.90 and 1,402.60

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Solution

The fourth proportional to 1,976.68, 2,967.90 and 1,402.60 is: 2,105.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.68 : 2,967.90 = 1,402.60 : x
  2. Step 2: Convert to fraction form
    1,976.68/2,967.90 = 1,402.60/x
  3. Step 3: Cross multiply
    1,976.68x = 2,967.90 × 1,402.60
  4. Step 4: Simplify right side
    1,976.68x = 4,162,776.54
  5. Step 5: Solve for x
    x = 4,162,776.54/1,976.68
  6. Step 6: Final answer
    x = 2,105.94

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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.