Home / 1,940.30-2,911.02-1,119.16

Finding the Fourth Proportional to 1,940.30, 2,911.02 and 1,119.16

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Solution

The fourth proportional to 1,940.30, 2,911.02 and 1,119.16 is: 1,679.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.30 : 2,911.02 = 1,119.16 : x
  2. Step 2: Convert to fraction form
    1,940.30/2,911.02 = 1,119.16/x
  3. Step 3: Cross multiply
    1,940.30x = 2,911.02 × 1,119.16
  4. Step 4: Simplify right side
    1,940.30x = 3,257,895.32
  5. Step 5: Solve for x
    x = 3,257,895.32/1,940.30
  6. Step 6: Final answer
    x = 1,679.07

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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.