Home / 1,640.09-2,263.30-1,081.37

Finding the Fourth Proportional to 1,640.09, 2,263.30 and 1,081.37

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Solution

The fourth proportional to 1,640.09, 2,263.30 and 1,081.37 is: 1,492.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.09 : 2,263.30 = 1,081.37 : x
  2. Step 2: Convert to fraction form
    1,640.09/2,263.30 = 1,081.37/x
  3. Step 3: Cross multiply
    1,640.09x = 2,263.30 × 1,081.37
  4. Step 4: Simplify right side
    1,640.09x = 2,447,464.72
  5. Step 5: Solve for x
    x = 2,447,464.72/1,640.09
  6. Step 6: Final answer
    x = 1,492.27

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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.