Home / 1,959.66-2,939.40-1,911.06

Finding the Fourth Proportional to 1,959.66, 2,939.40 and 1,911.06

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Solution

The fourth proportional to 1,959.66, 2,939.40 and 1,911.06 is: 2,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.66 : 2,939.40 = 1,911.06 : x
  2. Step 2: Convert to fraction form
    1,959.66/2,939.40 = 1,911.06/x
  3. Step 3: Cross multiply
    1,959.66x = 2,939.40 × 1,911.06
  4. Step 4: Simplify right side
    1,959.66x = 5,617,369.76
  5. Step 5: Solve for x
    x = 5,617,369.76/1,959.66
  6. Step 6: Final answer
    x = 2,866.50

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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.