Home / 1,914.11-2,640.02-1,284.47

Finding the Fourth Proportional to 1,914.11, 2,640.02 and 1,284.47

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Solution

The fourth proportional to 1,914.11, 2,640.02 and 1,284.47 is: 1,771.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.11 : 2,640.02 = 1,284.47 : x
  2. Step 2: Convert to fraction form
    1,914.11/2,640.02 = 1,284.47/x
  3. Step 3: Cross multiply
    1,914.11x = 2,640.02 × 1,284.47
  4. Step 4: Simplify right side
    1,914.11x = 3,391,006.87
  5. Step 5: Solve for x
    x = 3,391,006.87/1,914.11
  6. Step 6: Final answer
    x = 1,771.59

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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.