Home / 1,558.20-2,137.83-1,427.64

Finding the Fourth Proportional to 1,558.20, 2,137.83 and 1,427.64

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Solution

The fourth proportional to 1,558.20, 2,137.83 and 1,427.64 is: 1,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.20 : 2,137.83 = 1,427.64 : x
  2. Step 2: Convert to fraction form
    1,558.20/2,137.83 = 1,427.64/x
  3. Step 3: Cross multiply
    1,558.20x = 2,137.83 × 1,427.64
  4. Step 4: Simplify right side
    1,558.20x = 3,052,051.62
  5. Step 5: Solve for x
    x = 3,052,051.62/1,558.20
  6. Step 6: Final answer
    x = 1,958.70

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.