Home / 3,845.81-5,769.60-1,213.31

Finding the Fourth Proportional to 3,845.81, 5,769.60 and 1,213.31

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Solution

The fourth proportional to 3,845.81, 5,769.60 and 1,213.31 is: 1,820.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.81 : 5,769.60 = 1,213.31 : x
  2. Step 2: Convert to fraction form
    3,845.81/5,769.60 = 1,213.31/x
  3. Step 3: Cross multiply
    3,845.81x = 5,769.60 × 1,213.31
  4. Step 4: Simplify right side
    3,845.81x = 7,000,278.46
  5. Step 5: Solve for x
    x = 7,000,278.46/3,845.81
  6. Step 6: Final answer
    x = 1,820.24

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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.