Home / 1,911.17-2,851.21-1,886.60

Finding the Fourth Proportional to 1,911.17, 2,851.21 and 1,886.60

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Solution

The fourth proportional to 1,911.17, 2,851.21 and 1,886.60 is: 2,814.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.17 : 2,851.21 = 1,886.60 : x
  2. Step 2: Convert to fraction form
    1,911.17/2,851.21 = 1,886.60/x
  3. Step 3: Cross multiply
    1,911.17x = 2,851.21 × 1,886.60
  4. Step 4: Simplify right side
    1,911.17x = 5,379,092.79
  5. Step 5: Solve for x
    x = 5,379,092.79/1,911.17
  6. Step 6: Final answer
    x = 2,814.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.