Home / 4,135.40-6,191.40-3,212.60

Finding the Fourth Proportional to 4,135.40, 6,191.40 and 3,212.60

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Solution

The fourth proportional to 4,135.40, 6,191.40 and 3,212.60 is: 4,809.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,135.40 : 6,191.40 = 3,212.60 : x
  2. Step 2: Convert to fraction form
    4,135.40/6,191.40 = 3,212.60/x
  3. Step 3: Cross multiply
    4,135.40x = 6,191.40 × 3,212.60
  4. Step 4: Simplify right side
    4,135.40x = 19,890,491.64
  5. Step 5: Solve for x
    x = 19,890,491.64/4,135.40
  6. Step 6: Final answer
    x = 4,809.81

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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.