Home / 1,942.08-2,911.60-1,212

Finding the Fourth Proportional to 1,942.08, 2,911.60 and 1,212

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Solution

The fourth proportional to 1,942.08, 2,911.60 and 1,212 is: 1,817.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.08 : 2,911.60 = 1,212 : x
  2. Step 2: Convert to fraction form
    1,942.08/2,911.60 = 1,212/x
  3. Step 3: Cross multiply
    1,942.08x = 2,911.60 × 1,212
  4. Step 4: Simplify right side
    1,942.08x = 3,528,859.20
  5. Step 5: Solve for x
    x = 3,528,859.20/1,942.08
  6. Step 6: Final answer
    x = 1,817.05

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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.