Home / 1,427.36-2,144.88-1,089.44

Finding the Fourth Proportional to 1,427.36, 2,144.88 and 1,089.44

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Solution

The fourth proportional to 1,427.36, 2,144.88 and 1,089.44 is: 1,637.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.36 : 2,144.88 = 1,089.44 : x
  2. Step 2: Convert to fraction form
    1,427.36/2,144.88 = 1,089.44/x
  3. Step 3: Cross multiply
    1,427.36x = 2,144.88 × 1,089.44
  4. Step 4: Simplify right side
    1,427.36x = 2,336,718.07
  5. Step 5: Solve for x
    x = 2,336,718.07/1,427.36
  6. Step 6: Final answer
    x = 1,637.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.