Home / 1,609.25-2,221.70-1,207.67

Finding the Fourth Proportional to 1,609.25, 2,221.70 and 1,207.67

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Solution

The fourth proportional to 1,609.25, 2,221.70 and 1,207.67 is: 1,667.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.25 : 2,221.70 = 1,207.67 : x
  2. Step 2: Convert to fraction form
    1,609.25/2,221.70 = 1,207.67/x
  3. Step 3: Cross multiply
    1,609.25x = 2,221.70 × 1,207.67
  4. Step 4: Simplify right side
    1,609.25x = 2,683,063.29
  5. Step 5: Solve for x
    x = 2,683,063.29/1,609.25
  6. Step 6: Final answer
    x = 1,667.28

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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.