Home / 4,408.15-6,611.20-1,287.50

Finding the Fourth Proportional to 4,408.15, 6,611.20 and 1,287.50

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Solution

The fourth proportional to 4,408.15, 6,611.20 and 1,287.50 is: 1,930.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,408.15 : 6,611.20 = 1,287.50 : x
  2. Step 2: Convert to fraction form
    4,408.15/6,611.20 = 1,287.50/x
  3. Step 3: Cross multiply
    4,408.15x = 6,611.20 × 1,287.50
  4. Step 4: Simplify right side
    4,408.15x = 8,511,883.73
  5. Step 5: Solve for x
    x = 8,511,883.73/4,408.15
  6. Step 6: Final answer
    x = 1,930.94

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1.5x scale

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.