Home / 4,178.12-5,765.72-2,289.87

Finding the Fourth Proportional to 4,178.12, 5,765.72 and 2,289.87

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Solution

The fourth proportional to 4,178.12, 5,765.72 and 2,289.87 is: 3,159.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.12 : 5,765.72 = 2,289.87 : x
  2. Step 2: Convert to fraction form
    4,178.12/5,765.72 = 2,289.87/x
  3. Step 3: Cross multiply
    4,178.12x = 5,765.72 × 2,289.87
  4. Step 4: Simplify right side
    4,178.12x = 13,202,737.81
  5. Step 5: Solve for x
    x = 13,202,737.81/4,178.12
  6. Step 6: Final answer
    x = 3,159.97

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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.