Home / 2,861.13-4,291.70-1,129.75

Finding the Fourth Proportional to 2,861.13, 4,291.70 and 1,129.75

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Solution

The fourth proportional to 2,861.13, 4,291.70 and 1,129.75 is: 1,694.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.13 : 4,291.70 = 1,129.75 : x
  2. Step 2: Convert to fraction form
    2,861.13/4,291.70 = 1,129.75/x
  3. Step 3: Cross multiply
    2,861.13x = 4,291.70 × 1,129.75
  4. Step 4: Simplify right side
    2,861.13x = 4,848,548.08
  5. Step 5: Solve for x
    x = 4,848,548.08/2,861.13
  6. Step 6: Final answer
    x = 1,694.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.