Home / 5,386.42-8,078.37-2,098.18

Finding the Fourth Proportional to 5,386.42, 8,078.37 and 2,098.18

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Solution

The fourth proportional to 5,386.42, 8,078.37 and 2,098.18 is: 3,146.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.42 : 8,078.37 = 2,098.18 : x
  2. Step 2: Convert to fraction form
    5,386.42/8,078.37 = 2,098.18/x
  3. Step 3: Cross multiply
    5,386.42x = 8,078.37 × 2,098.18
  4. Step 4: Simplify right side
    5,386.42x = 16,949,874.37
  5. Step 5: Solve for x
    x = 16,949,874.37/5,386.42
  6. Step 6: Final answer
    x = 3,146.78

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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.