Home / 1,709.32-2,563.98-979.36

Finding the Fourth Proportional to 1,709.32, 2,563.98 and 979.36

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Solution

The fourth proportional to 1,709.32, 2,563.98 and 979.36 is: 1,469.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.32 : 2,563.98 = 979.36 : x
  2. Step 2: Convert to fraction form
    1,709.32/2,563.98 = 979.36/x
  3. Step 3: Cross multiply
    1,709.32x = 2,563.98 × 979.36
  4. Step 4: Simplify right side
    1,709.32x = 2,511,059.45
  5. Step 5: Solve for x
    x = 2,511,059.45/1,709.32
  6. Step 6: Final answer
    x = 1,469.04

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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.