Home / 1,861.14-2,568.87-1,271.56

Finding the Fourth Proportional to 1,861.14, 2,568.87 and 1,271.56

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Solution

The fourth proportional to 1,861.14, 2,568.87 and 1,271.56 is: 1,755.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.14 : 2,568.87 = 1,271.56 : x
  2. Step 2: Convert to fraction form
    1,861.14/2,568.87 = 1,271.56/x
  3. Step 3: Cross multiply
    1,861.14x = 2,568.87 × 1,271.56
  4. Step 4: Simplify right side
    1,861.14x = 3,266,472.34
  5. Step 5: Solve for x
    x = 3,266,472.34/1,861.14
  6. Step 6: Final answer
    x = 1,755.09

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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.