Home / 1,972.03-2,720.25-1,273.40

Finding the Fourth Proportional to 1,972.03, 2,720.25 and 1,273.40

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Solution

The fourth proportional to 1,972.03, 2,720.25 and 1,273.40 is: 1,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.03 : 2,720.25 = 1,273.40 : x
  2. Step 2: Convert to fraction form
    1,972.03/2,720.25 = 1,273.40/x
  3. Step 3: Cross multiply
    1,972.03x = 2,720.25 × 1,273.40
  4. Step 4: Simplify right side
    1,972.03x = 3,463,978.25
  5. Step 5: Solve for x
    x = 3,463,978.25/1,972.03
  6. Step 6: Final answer
    x = 1,756.56

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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.