Home / 1,623.36-2,240.64-1,208.64

Finding the Fourth Proportional to 1,623.36, 2,240.64 and 1,208.64

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Solution

The fourth proportional to 1,623.36, 2,240.64 and 1,208.64 is: 1,668.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.36 : 2,240.64 = 1,208.64 : x
  2. Step 2: Convert to fraction form
    1,623.36/2,240.64 = 1,208.64/x
  3. Step 3: Cross multiply
    1,623.36x = 2,240.64 × 1,208.64
  4. Step 4: Simplify right side
    1,623.36x = 2,708,127.13
  5. Step 5: Solve for x
    x = 2,708,127.13/1,623.36
  6. Step 6: Final answer
    x = 1,668.22

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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.