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Finding the Fourth Proportional to 1,879.49, 2,592.02 and 1,215.64

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Solution

The fourth proportional to 1,879.49, 2,592.02 and 1,215.64 is: 1,676.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,879.49 : 2,592.02 = 1,215.64 : x
  2. Step 2: Convert to fraction form
    1,879.49/2,592.02 = 1,215.64/x
  3. Step 3: Cross multiply
    1,879.49x = 2,592.02 × 1,215.64
  4. Step 4: Simplify right side
    1,879.49x = 3,150,963.19
  5. Step 5: Solve for x
    x = 3,150,963.19/1,879.49
  6. Step 6: Final answer
    x = 1,676.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.