Home / 2,678.31-4,018.41-1,216.53

Finding the Fourth Proportional to 2,678.31, 4,018.41 and 1,216.53

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Solution

The fourth proportional to 2,678.31, 4,018.41 and 1,216.53 is: 1,825.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.31 : 4,018.41 = 1,216.53 : x
  2. Step 2: Convert to fraction form
    2,678.31/4,018.41 = 1,216.53/x
  3. Step 3: Cross multiply
    2,678.31x = 4,018.41 × 1,216.53
  4. Step 4: Simplify right side
    2,678.31x = 4,888,516.32
  5. Step 5: Solve for x
    x = 4,888,516.32/2,678.31
  6. Step 6: Final answer
    x = 1,825.22

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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.