Home / 1,868.78-2,804.12-1,324.46

Finding the Fourth Proportional to 1,868.78, 2,804.12 and 1,324.46

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Solution

The fourth proportional to 1,868.78, 2,804.12 and 1,324.46 is: 1,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.78 : 2,804.12 = 1,324.46 : x
  2. Step 2: Convert to fraction form
    1,868.78/2,804.12 = 1,324.46/x
  3. Step 3: Cross multiply
    1,868.78x = 2,804.12 × 1,324.46
  4. Step 4: Simplify right side
    1,868.78x = 3,713,944.78
  5. Step 5: Solve for x
    x = 3,713,944.78/1,868.78
  6. Step 6: Final answer
    x = 1,987.36

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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.