Home / 1,290.29-1,789.74-1,246.04

Finding the Fourth Proportional to 1,290.29, 1,789.74 and 1,246.04

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Solution

The fourth proportional to 1,290.29, 1,789.74 and 1,246.04 is: 1,728.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290.29 : 1,789.74 = 1,246.04 : x
  2. Step 2: Convert to fraction form
    1,290.29/1,789.74 = 1,246.04/x
  3. Step 3: Cross multiply
    1,290.29x = 1,789.74 × 1,246.04
  4. Step 4: Simplify right side
    1,290.29x = 2,230,092.18
  5. Step 5: Solve for x
    x = 2,230,092.18/1,290.29
  6. Step 6: Final answer
    x = 1,728.36

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.