Home / 8,618.40-12,928.82-2,774.25

Finding the Fourth Proportional to 8,618.40, 12,928.82 and 2,774.25

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Solution

The fourth proportional to 8,618.40, 12,928.82 and 2,774.25 is: 4,161.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.40 : 12,928.82 = 2,774.25 : x
  2. Step 2: Convert to fraction form
    8,618.40/12,928.82 = 2,774.25/x
  3. Step 3: Cross multiply
    8,618.40x = 12,928.82 × 2,774.25
  4. Step 4: Simplify right side
    8,618.40x = 35,867,765.01
  5. Step 5: Solve for x
    x = 35,867,765.01/8,618.40
  6. Step 6: Final answer
    x = 4,161.77

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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.