Home / 1,485.39-2,049.85-822.29

Finding the Fourth Proportional to 1,485.39, 2,049.85 and 822.29

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Solution

The fourth proportional to 1,485.39, 2,049.85 and 822.29 is: 1,134.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.39 : 2,049.85 = 822.29 : x
  2. Step 2: Convert to fraction form
    1,485.39/2,049.85 = 822.29/x
  3. Step 3: Cross multiply
    1,485.39x = 2,049.85 × 822.29
  4. Step 4: Simplify right side
    1,485.39x = 1,685,571.16
  5. Step 5: Solve for x
    x = 1,685,571.16/1,485.39
  6. Step 6: Final answer
    x = 1,134.77

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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.