Home / 7,964.60-11,946.96-2,121.26

Finding the Fourth Proportional to 7,964.60, 11,946.96 and 2,121.26

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Solution

The fourth proportional to 7,964.60, 11,946.96 and 2,121.26 is: 3,181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.60 : 11,946.96 = 2,121.26 : x
  2. Step 2: Convert to fraction form
    7,964.60/11,946.96 = 2,121.26/x
  3. Step 3: Cross multiply
    7,964.60x = 11,946.96 × 2,121.26
  4. Step 4: Simplify right side
    7,964.60x = 25,342,548.63
  5. Step 5: Solve for x
    x = 25,342,548.63/7,964.60
  6. Step 6: Final answer
    x = 3,181.90

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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.