Home / 2,790.99-3,845.48-1,857.87

Finding the Fourth Proportional to 2,790.99, 3,845.48 and 1,857.87

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Solution

The fourth proportional to 2,790.99, 3,845.48 and 1,857.87 is: 2,559.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.99 : 3,845.48 = 1,857.87 : x
  2. Step 2: Convert to fraction form
    2,790.99/3,845.48 = 1,857.87/x
  3. Step 3: Cross multiply
    2,790.99x = 3,845.48 × 1,857.87
  4. Step 4: Simplify right side
    2,790.99x = 7,144,392.64
  5. Step 5: Solve for x
    x = 7,144,392.64/2,790.99
  6. Step 6: Final answer
    x = 2,559.81

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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.