Home / 1,971.40-2,721.06-1,273.24

Finding the Fourth Proportional to 1,971.40, 2,721.06 and 1,273.24

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Solution

The fourth proportional to 1,971.40, 2,721.06 and 1,273.24 is: 1,757.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.40 : 2,721.06 = 1,273.24 : x
  2. Step 2: Convert to fraction form
    1,971.40/2,721.06 = 1,273.24/x
  3. Step 3: Cross multiply
    1,971.40x = 2,721.06 × 1,273.24
  4. Step 4: Simplify right side
    1,971.40x = 3,464,562.43
  5. Step 5: Solve for x
    x = 3,464,562.43/1,971.40
  6. Step 6: Final answer
    x = 1,757.41

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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.