Home / 1,971.73-2,721.77-1,185.63

Finding the Fourth Proportional to 1,971.73, 2,721.77 and 1,185.63

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Solution

The fourth proportional to 1,971.73, 2,721.77 and 1,185.63 is: 1,636.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.73 : 2,721.77 = 1,185.63 : x
  2. Step 2: Convert to fraction form
    1,971.73/2,721.77 = 1,185.63/x
  3. Step 3: Cross multiply
    1,971.73x = 2,721.77 × 1,185.63
  4. Step 4: Simplify right side
    1,971.73x = 3,226,992.63
  5. Step 5: Solve for x
    x = 3,226,992.63/1,971.73
  6. Step 6: Final answer
    x = 1,636.63

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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.