Home / 2,290.30-3,160.62-1,242.36

Finding the Fourth Proportional to 2,290.30, 3,160.62 and 1,242.36

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Solution

The fourth proportional to 2,290.30, 3,160.62 and 1,242.36 is: 1,714.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.30 : 3,160.62 = 1,242.36 : x
  2. Step 2: Convert to fraction form
    2,290.30/3,160.62 = 1,242.36/x
  3. Step 3: Cross multiply
    2,290.30x = 3,160.62 × 1,242.36
  4. Step 4: Simplify right side
    2,290.30x = 3,926,636.75
  5. Step 5: Solve for x
    x = 3,926,636.75/2,290.30
  6. Step 6: Final answer
    x = 1,714.46

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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.