Home / 3,078.90-4,247.28-2,084.54

Finding the Fourth Proportional to 3,078.90, 4,247.28 and 2,084.54

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Solution

The fourth proportional to 3,078.90, 4,247.28 and 2,084.54 is: 2,875.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.90 : 4,247.28 = 2,084.54 : x
  2. Step 2: Convert to fraction form
    3,078.90/4,247.28 = 2,084.54/x
  3. Step 3: Cross multiply
    3,078.90x = 4,247.28 × 2,084.54
  4. Step 4: Simplify right side
    3,078.90x = 8,853,625.05
  5. Step 5: Solve for x
    x = 8,853,625.05/3,078.90
  6. Step 6: Final answer
    x = 2,875.58

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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.