Home / 4,786.45-7,176.85-1,861.31

Finding the Fourth Proportional to 4,786.45, 7,176.85 and 1,861.31

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Solution

The fourth proportional to 4,786.45, 7,176.85 and 1,861.31 is: 2,790.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.45 : 7,176.85 = 1,861.31 : x
  2. Step 2: Convert to fraction form
    4,786.45/7,176.85 = 1,861.31/x
  3. Step 3: Cross multiply
    4,786.45x = 7,176.85 × 1,861.31
  4. Step 4: Simplify right side
    4,786.45x = 13,358,342.67
  5. Step 5: Solve for x
    x = 13,358,342.67/4,786.45
  6. Step 6: Final answer
    x = 2,790.87

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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.