Home / 1,661.40-2,290.14-1,243.44

Finding the Fourth Proportional to 1,661.40, 2,290.14 and 1,243.44

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Solution

The fourth proportional to 1,661.40, 2,290.14 and 1,243.44 is: 1,714.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.40 : 2,290.14 = 1,243.44 : x
  2. Step 2: Convert to fraction form
    1,661.40/2,290.14 = 1,243.44/x
  3. Step 3: Cross multiply
    1,661.40x = 2,290.14 × 1,243.44
  4. Step 4: Simplify right side
    1,661.40x = 2,847,651.68
  5. Step 5: Solve for x
    x = 2,847,651.68/1,661.40
  6. Step 6: Final answer
    x = 1,714.01

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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.