Home / 1,572.16-2,169.03-982.48

Finding the Fourth Proportional to 1,572.16, 2,169.03 and 982.48

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Solution

The fourth proportional to 1,572.16, 2,169.03 and 982.48 is: 1,355.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.16 : 2,169.03 = 982.48 : x
  2. Step 2: Convert to fraction form
    1,572.16/2,169.03 = 982.48/x
  3. Step 3: Cross multiply
    1,572.16x = 2,169.03 × 982.48
  4. Step 4: Simplify right side
    1,572.16x = 2,131,028.59
  5. Step 5: Solve for x
    x = 2,131,028.59/1,572.16
  6. Step 6: Final answer
    x = 1,355.48

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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.