Home / 1,485.31-2,228.25-936.85

Finding the Fourth Proportional to 1,485.31, 2,228.25 and 936.85

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Solution

The fourth proportional to 1,485.31, 2,228.25 and 936.85 is: 1,405.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.31 : 2,228.25 = 936.85 : x
  2. Step 2: Convert to fraction form
    1,485.31/2,228.25 = 936.85/x
  3. Step 3: Cross multiply
    1,485.31x = 2,228.25 × 936.85
  4. Step 4: Simplify right side
    1,485.31x = 2,087,536.01
  5. Step 5: Solve for x
    x = 2,087,536.01/1,485.31
  6. Step 6: Final answer
    x = 1,405.45

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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.