Home / 1,966.08-2,704.80-1,911.40

Finding the Fourth Proportional to 1,966.08, 2,704.80 and 1,911.40

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Solution

The fourth proportional to 1,966.08, 2,704.80 and 1,911.40 is: 2,629.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.08 : 2,704.80 = 1,911.40 : x
  2. Step 2: Convert to fraction form
    1,966.08/2,704.80 = 1,911.40/x
  3. Step 3: Cross multiply
    1,966.08x = 2,704.80 × 1,911.40
  4. Step 4: Simplify right side
    1,966.08x = 5,169,954.72
  5. Step 5: Solve for x
    x = 5,169,954.72/1,966.08
  6. Step 6: Final answer
    x = 2,629.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.