Home / 1,909.22-2,635.54-1,246.64

Finding the Fourth Proportional to 1,909.22, 2,635.54 and 1,246.64

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Solution

The fourth proportional to 1,909.22, 2,635.54 and 1,246.64 is: 1,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.22 : 2,635.54 = 1,246.64 : x
  2. Step 2: Convert to fraction form
    1,909.22/2,635.54 = 1,246.64/x
  3. Step 3: Cross multiply
    1,909.22x = 2,635.54 × 1,246.64
  4. Step 4: Simplify right side
    1,909.22x = 3,285,569.59
  5. Step 5: Solve for x
    x = 3,285,569.59/1,909.22
  6. Step 6: Final answer
    x = 1,720.90

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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.