Home / 1,609.22-2,217.42-1,188.92

Finding the Fourth Proportional to 1,609.22, 2,217.42 and 1,188.92

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Solution

The fourth proportional to 1,609.22, 2,217.42 and 1,188.92 is: 1,638.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.22 : 2,217.42 = 1,188.92 : x
  2. Step 2: Convert to fraction form
    1,609.22/2,217.42 = 1,188.92/x
  3. Step 3: Cross multiply
    1,609.22x = 2,217.42 × 1,188.92
  4. Step 4: Simplify right side
    1,609.22x = 2,636,323.90
  5. Step 5: Solve for x
    x = 2,636,323.90/1,609.22
  6. Step 6: Final answer
    x = 1,638.27

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1.5x scale

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.