Home / 1,645.35-2,270.61-982.26

Finding the Fourth Proportional to 1,645.35, 2,270.61 and 982.26

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Solution

The fourth proportional to 1,645.35, 2,270.61 and 982.26 is: 1,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.35 : 2,270.61 = 982.26 : x
  2. Step 2: Convert to fraction form
    1,645.35/2,270.61 = 982.26/x
  3. Step 3: Cross multiply
    1,645.35x = 2,270.61 × 982.26
  4. Step 4: Simplify right side
    1,645.35x = 2,230,329.38
  5. Step 5: Solve for x
    x = 2,230,329.38/1,645.35
  6. Step 6: Final answer
    x = 1,355.53

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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.