Home / 1,969.06-2,718.45-1,223.43

Finding the Fourth Proportional to 1,969.06, 2,718.45 and 1,223.43

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Solution

The fourth proportional to 1,969.06, 2,718.45 and 1,223.43 is: 1,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.06 : 2,718.45 = 1,223.43 : x
  2. Step 2: Convert to fraction form
    1,969.06/2,718.45 = 1,223.43/x
  3. Step 3: Cross multiply
    1,969.06x = 2,718.45 × 1,223.43
  4. Step 4: Simplify right side
    1,969.06x = 3,325,833.28
  5. Step 5: Solve for x
    x = 3,325,833.28/1,969.06
  6. Step 6: Final answer
    x = 1,689.05

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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.