Home / 7,964.02-11,946.30-2,121.22

Finding the Fourth Proportional to 7,964.02, 11,946.30 and 2,121.22

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Solution

The fourth proportional to 7,964.02, 11,946.30 and 2,121.22 is: 3,181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.02 : 11,946.30 = 2,121.22 : x
  2. Step 2: Convert to fraction form
    7,964.02/11,946.30 = 2,121.22/x
  3. Step 3: Cross multiply
    7,964.02x = 11,946.30 × 2,121.22
  4. Step 4: Simplify right side
    7,964.02x = 25,340,730.49
  5. Step 5: Solve for x
    x = 25,340,730.49/7,964.02
  6. Step 6: Final answer
    x = 3,181.90

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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.