Home / 1,971.94-2,721.26-1,087.75

Finding the Fourth Proportional to 1,971.94, 2,721.26 and 1,087.75

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Solution

The fourth proportional to 1,971.94, 2,721.26 and 1,087.75 is: 1,501.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.94 : 2,721.26 = 1,087.75 : x
  2. Step 2: Convert to fraction form
    1,971.94/2,721.26 = 1,087.75/x
  3. Step 3: Cross multiply
    1,971.94x = 2,721.26 × 1,087.75
  4. Step 4: Simplify right side
    1,971.94x = 2,960,053.28
  5. Step 5: Solve for x
    x = 2,960,053.28/1,971.94
  6. Step 6: Final answer
    x = 1,501.08

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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.