Home / 4,786.30-7,176.51-1,861.20

Finding the Fourth Proportional to 4,786.30, 7,176.51 and 1,861.20

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Solution

The fourth proportional to 4,786.30, 7,176.51 and 1,861.20 is: 2,790.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.30 : 7,176.51 = 1,861.20 : x
  2. Step 2: Convert to fraction form
    4,786.30/7,176.51 = 1,861.20/x
  3. Step 3: Cross multiply
    4,786.30x = 7,176.51 × 1,861.20
  4. Step 4: Simplify right side
    4,786.30x = 13,356,884.53
  5. Step 5: Solve for x
    x = 13,356,884.53/4,786.30
  6. Step 6: Final answer
    x = 2,790.65

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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.