Home / 1,896.24-2,840.88-1,311.28

Finding the Fourth Proportional to 1,896.24, 2,840.88 and 1,311.28

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Solution

The fourth proportional to 1,896.24, 2,840.88 and 1,311.28 is: 1,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,896.24 : 2,840.88 = 1,311.28 : x
  2. Step 2: Convert to fraction form
    1,896.24/2,840.88 = 1,311.28/x
  3. Step 3: Cross multiply
    1,896.24x = 2,840.88 × 1,311.28
  4. Step 4: Simplify right side
    1,896.24x = 3,725,189.13
  5. Step 5: Solve for x
    x = 3,725,189.13/1,896.24
  6. Step 6: Final answer
    x = 1,964.51

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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.