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Finding the Fourth Proportional to 1,684.80, 2,322.24 and 1,310.64

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Solution

The fourth proportional to 1,684.80, 2,322.24 and 1,310.64 is: 1,806.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.80 : 2,322.24 = 1,310.64 : x
  2. Step 2: Convert to fraction form
    1,684.80/2,322.24 = 1,310.64/x
  3. Step 3: Cross multiply
    1,684.80x = 2,322.24 × 1,310.64
  4. Step 4: Simplify right side
    1,684.80x = 3,043,620.63
  5. Step 5: Solve for x
    x = 3,043,620.63/1,684.80
  6. Step 6: Final answer
    x = 1,806.52

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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.