Home / 1,708.52-2,562.78-1,319.09

Finding the Fourth Proportional to 1,708.52, 2,562.78 and 1,319.09

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Solution

The fourth proportional to 1,708.52, 2,562.78 and 1,319.09 is: 1,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.52 : 2,562.78 = 1,319.09 : x
  2. Step 2: Convert to fraction form
    1,708.52/2,562.78 = 1,319.09/x
  3. Step 3: Cross multiply
    1,708.52x = 2,562.78 × 1,319.09
  4. Step 4: Simplify right side
    1,708.52x = 3,380,546.35
  5. Step 5: Solve for x
    x = 3,380,546.35/1,708.52
  6. Step 6: Final answer
    x = 1,978.64

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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.