Home / 1,485.32-2,049.76-822.19

Finding the Fourth Proportional to 1,485.32, 2,049.76 and 822.19

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Solution

The fourth proportional to 1,485.32, 2,049.76 and 822.19 is: 1,134.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.32 : 2,049.76 = 822.19 : x
  2. Step 2: Convert to fraction form
    1,485.32/2,049.76 = 822.19/x
  3. Step 3: Cross multiply
    1,485.32x = 2,049.76 × 822.19
  4. Step 4: Simplify right side
    1,485.32x = 1,685,284.23
  5. Step 5: Solve for x
    x = 1,685,284.23/1,485.32
  6. Step 6: Final answer
    x = 1,134.63

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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.