Home / 1,969.83-2,718.44-1,085.61

Finding the Fourth Proportional to 1,969.83, 2,718.44 and 1,085.61

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Solution

The fourth proportional to 1,969.83, 2,718.44 and 1,085.61 is: 1,498.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.83 : 2,718.44 = 1,085.61 : x
  2. Step 2: Convert to fraction form
    1,969.83/2,718.44 = 1,085.61/x
  3. Step 3: Cross multiply
    1,969.83x = 2,718.44 × 1,085.61
  4. Step 4: Simplify right side
    1,969.83x = 2,951,160.22
  5. Step 5: Solve for x
    x = 2,951,160.22/1,969.83
  6. Step 6: Final answer
    x = 1,498.18

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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.