Home / 2,290.57-3,161.01-1,242.64

Finding the Fourth Proportional to 2,290.57, 3,161.01 and 1,242.64

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Solution

The fourth proportional to 2,290.57, 3,161.01 and 1,242.64 is: 1,714.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.57 : 3,161.01 = 1,242.64 : x
  2. Step 2: Convert to fraction form
    2,290.57/3,161.01 = 1,242.64/x
  3. Step 3: Cross multiply
    2,290.57x = 3,161.01 × 1,242.64
  4. Step 4: Simplify right side
    2,290.57x = 3,927,997.47
  5. Step 5: Solve for x
    x = 3,927,997.47/2,290.57
  6. Step 6: Final answer
    x = 1,714.86

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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.