Home / 1,736.44-2,605.16-640.81

Finding the Fourth Proportional to 1,736.44, 2,605.16 and 640.81

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Solution

The fourth proportional to 1,736.44, 2,605.16 and 640.81 is: 961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736.44 : 2,605.16 = 640.81 : x
  2. Step 2: Convert to fraction form
    1,736.44/2,605.16 = 640.81/x
  3. Step 3: Cross multiply
    1,736.44x = 2,605.16 × 640.81
  4. Step 4: Simplify right side
    1,736.44x = 1,669,417.44
  5. Step 5: Solve for x
    x = 1,669,417.44/1,736.44
  6. Step 6: Final answer
    x = 961.40

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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.