Home / 2,289.44-3,159.72-1,405.88

Finding the Fourth Proportional to 2,289.44, 3,159.72 and 1,405.88

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Solution

The fourth proportional to 2,289.44, 3,159.72 and 1,405.88 is: 1,940.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.44 : 3,159.72 = 1,405.88 : x
  2. Step 2: Convert to fraction form
    2,289.44/3,159.72 = 1,405.88/x
  3. Step 3: Cross multiply
    2,289.44x = 3,159.72 × 1,405.88
  4. Step 4: Simplify right side
    2,289.44x = 4,442,187.15
  5. Step 5: Solve for x
    x = 4,442,187.15/2,289.44
  6. Step 6: Final answer
    x = 1,940.29

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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.