Home / 1,971.92-2,720.10-1,273.30

Finding the Fourth Proportional to 1,971.92, 2,720.10 and 1,273.30

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Solution

The fourth proportional to 1,971.92, 2,720.10 and 1,273.30 is: 1,756.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.92 : 2,720.10 = 1,273.30 : x
  2. Step 2: Convert to fraction form
    1,971.92/2,720.10 = 1,273.30/x
  3. Step 3: Cross multiply
    1,971.92x = 2,720.10 × 1,273.30
  4. Step 4: Simplify right side
    1,971.92x = 3,463,503.33
  5. Step 5: Solve for x
    x = 3,463,503.33/1,971.92
  6. Step 6: Final answer
    x = 1,756.41

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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.