Home / 1,811.56-2,499.78-1,439.44

Finding the Fourth Proportional to 1,811.56, 2,499.78 and 1,439.44

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Solution

The fourth proportional to 1,811.56, 2,499.78 and 1,439.44 is: 1,986.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.56 : 2,499.78 = 1,439.44 : x
  2. Step 2: Convert to fraction form
    1,811.56/2,499.78 = 1,439.44/x
  3. Step 3: Cross multiply
    1,811.56x = 2,499.78 × 1,439.44
  4. Step 4: Simplify right side
    1,811.56x = 3,598,283.32
  5. Step 5: Solve for x
    x = 3,598,283.32/1,811.56
  6. Step 6: Final answer
    x = 1,986.29

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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.