Home / 7,858.60-11,786.46-3,178.36

Finding the Fourth Proportional to 7,858.60, 11,786.46 and 3,178.36

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Solution

The fourth proportional to 7,858.60, 11,786.46 and 3,178.36 is: 4,766.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.60 : 11,786.46 = 3,178.36 : x
  2. Step 2: Convert to fraction form
    7,858.60/11,786.46 = 3,178.36/x
  3. Step 3: Cross multiply
    7,858.60x = 11,786.46 × 3,178.36
  4. Step 4: Simplify right side
    7,858.60x = 37,461,613.01
  5. Step 5: Solve for x
    x = 37,461,613.01/7,858.60
  6. Step 6: Final answer
    x = 4,766.96

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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.