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Finding the Fourth Proportional to 2,646.94, 3,969.60 and 1,830.46

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Solution

The fourth proportional to 2,646.94, 3,969.60 and 1,830.46 is: 2,745.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,646.94 : 3,969.60 = 1,830.46 : x
  2. Step 2: Convert to fraction form
    2,646.94/3,969.60 = 1,830.46/x
  3. Step 3: Cross multiply
    2,646.94x = 3,969.60 × 1,830.46
  4. Step 4: Simplify right side
    2,646.94x = 7,266,194.02
  5. Step 5: Solve for x
    x = 7,266,194.02/2,646.94
  6. Step 6: Final answer
    x = 2,745.13

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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.