Home / 3,086.12-4,258.98-1,907

Finding the Fourth Proportional to 3,086.12, 4,258.98 and 1,907

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Solution

The fourth proportional to 3,086.12, 4,258.98 and 1,907 is: 2,631.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.12 : 4,258.98 = 1,907 : x
  2. Step 2: Convert to fraction form
    3,086.12/4,258.98 = 1,907/x
  3. Step 3: Cross multiply
    3,086.12x = 4,258.98 × 1,907
  4. Step 4: Simplify right side
    3,086.12x = 8,121,874.86
  5. Step 5: Solve for x
    x = 8,121,874.86/3,086.12
  6. Step 6: Final answer
    x = 2,631.74

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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.