Home / 1,911.16-2,650.80-1,833.40

Finding the Fourth Proportional to 1,911.16, 2,650.80 and 1,833.40

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Solution

The fourth proportional to 1,911.16, 2,650.80 and 1,833.40 is: 2,542.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.16 : 2,650.80 = 1,833.40 : x
  2. Step 2: Convert to fraction form
    1,911.16/2,650.80 = 1,833.40/x
  3. Step 3: Cross multiply
    1,911.16x = 2,650.80 × 1,833.40
  4. Step 4: Simplify right side
    1,911.16x = 4,859,976.72
  5. Step 5: Solve for x
    x = 4,859,976.72/1,911.16
  6. Step 6: Final answer
    x = 2,542.95

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.