Home / 3,078.20-4,246.71-1,897.22

Finding the Fourth Proportional to 3,078.20, 4,246.71 and 1,897.22

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Solution

The fourth proportional to 3,078.20, 4,246.71 and 1,897.22 is: 2,617.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.20 : 4,246.71 = 1,897.22 : x
  2. Step 2: Convert to fraction form
    3,078.20/4,246.71 = 1,897.22/x
  3. Step 3: Cross multiply
    3,078.20x = 4,246.71 × 1,897.22
  4. Step 4: Simplify right side
    3,078.20x = 8,056,943.15
  5. Step 5: Solve for x
    x = 8,056,943.15/3,078.20
  6. Step 6: Final answer
    x = 2,617.42

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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.