Home / 2,814.66-3,884.48-1,868.78

Finding the Fourth Proportional to 2,814.66, 3,884.48 and 1,868.78

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Solution

The fourth proportional to 2,814.66, 3,884.48 and 1,868.78 is: 2,579.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.66 : 3,884.48 = 1,868.78 : x
  2. Step 2: Convert to fraction form
    2,814.66/3,884.48 = 1,868.78/x
  3. Step 3: Cross multiply
    2,814.66x = 3,884.48 × 1,868.78
  4. Step 4: Simplify right side
    2,814.66x = 7,259,209.77
  5. Step 5: Solve for x
    x = 7,259,209.77/2,814.66
  6. Step 6: Final answer
    x = 2,579.07

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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.