Home / 1,861.80-2,567.97-1,231.98

Finding the Fourth Proportional to 1,861.80, 2,567.97 and 1,231.98

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Solution

The fourth proportional to 1,861.80, 2,567.97 and 1,231.98 is: 1,699.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.80 : 2,567.97 = 1,231.98 : x
  2. Step 2: Convert to fraction form
    1,861.80/2,567.97 = 1,231.98/x
  3. Step 3: Cross multiply
    1,861.80x = 2,567.97 × 1,231.98
  4. Step 4: Simplify right side
    1,861.80x = 3,163,687.68
  5. Step 5: Solve for x
    x = 3,163,687.68/1,861.80
  6. Step 6: Final answer
    x = 1,699.26

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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.