Home / 1,645.44-2,270.54-982.20

Finding the Fourth Proportional to 1,645.44, 2,270.54 and 982.20

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Solution

The fourth proportional to 1,645.44, 2,270.54 and 982.20 is: 1,355.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.44 : 2,270.54 = 982.20 : x
  2. Step 2: Convert to fraction form
    1,645.44/2,270.54 = 982.20/x
  3. Step 3: Cross multiply
    1,645.44x = 2,270.54 × 982.20
  4. Step 4: Simplify right side
    1,645.44x = 2,230,124.39
  5. Step 5: Solve for x
    x = 2,230,124.39/1,645.44
  6. Step 6: Final answer
    x = 1,355.34

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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.