Home / 8,958.94-13,438.71-3,115.60

Finding the Fourth Proportional to 8,958.94, 13,438.71 and 3,115.60

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Solution

The fourth proportional to 8,958.94, 13,438.71 and 3,115.60 is: 4,673.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.94 : 13,438.71 = 3,115.60 : x
  2. Step 2: Convert to fraction form
    8,958.94/13,438.71 = 3,115.60/x
  3. Step 3: Cross multiply
    8,958.94x = 13,438.71 × 3,115.60
  4. Step 4: Simplify right side
    8,958.94x = 41,869,644.88
  5. Step 5: Solve for x
    x = 41,869,644.88/8,958.94
  6. Step 6: Final answer
    x = 4,673.50

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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.