Home / 2,814.42-3,883.79-1,555.39

Finding the Fourth Proportional to 2,814.42, 3,883.79 and 1,555.39

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Solution

The fourth proportional to 2,814.42, 3,883.79 and 1,555.39 is: 2,146.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.42 : 3,883.79 = 1,555.39 : x
  2. Step 2: Convert to fraction form
    2,814.42/3,883.79 = 1,555.39/x
  3. Step 3: Cross multiply
    2,814.42x = 3,883.79 × 1,555.39
  4. Step 4: Simplify right side
    2,814.42x = 6,040,808.12
  5. Step 5: Solve for x
    x = 6,040,808.12/2,814.42
  6. Step 6: Final answer
    x = 2,146.38

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1.5x scale

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.