Home / 1,623.36-2,240.82-960.78

Finding the Fourth Proportional to 1,623.36, 2,240.82 and 960.78

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Solution

The fourth proportional to 1,623.36, 2,240.82 and 960.78 is: 1,326.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.36 : 2,240.82 = 960.78 : x
  2. Step 2: Convert to fraction form
    1,623.36/2,240.82 = 960.78/x
  3. Step 3: Cross multiply
    1,623.36x = 2,240.82 × 960.78
  4. Step 4: Simplify right side
    1,623.36x = 2,152,935.04
  5. Step 5: Solve for x
    x = 2,152,935.04/1,623.36
  6. Step 6: Final answer
    x = 1,326.22

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1.5x scale

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.