Home / 2,120.90-2,926.33-1,270.44

Finding the Fourth Proportional to 2,120.90, 2,926.33 and 1,270.44

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Solution

The fourth proportional to 2,120.90, 2,926.33 and 1,270.44 is: 1,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.90 : 2,926.33 = 1,270.44 : x
  2. Step 2: Convert to fraction form
    2,120.90/2,926.33 = 1,270.44/x
  3. Step 3: Cross multiply
    2,120.90x = 2,926.33 × 1,270.44
  4. Step 4: Simplify right side
    2,120.90x = 3,717,720.33
  5. Step 5: Solve for x
    x = 3,717,720.33/2,120.90
  6. Step 6: Final answer
    x = 1,752.90

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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.