Home / 2,427.09-3,640.64-1,275.09

Finding the Fourth Proportional to 2,427.09, 3,640.64 and 1,275.09

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Solution

The fourth proportional to 2,427.09, 3,640.64 and 1,275.09 is: 1,912.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,427.09 : 3,640.64 = 1,275.09 : x
  2. Step 2: Convert to fraction form
    2,427.09/3,640.64 = 1,275.09/x
  3. Step 3: Cross multiply
    2,427.09x = 3,640.64 × 1,275.09
  4. Step 4: Simplify right side
    2,427.09x = 4,642,137.28
  5. Step 5: Solve for x
    x = 4,642,137.28/2,427.09
  6. Step 6: Final answer
    x = 1,912.64

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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.