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Finding the Fourth Proportional to 1,684.60, 2,324.90 and 1,021.82

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Solution

The fourth proportional to 1,684.60, 2,324.90 and 1,021.82 is: 1,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.60 : 2,324.90 = 1,021.82 : x
  2. Step 2: Convert to fraction form
    1,684.60/2,324.90 = 1,021.82/x
  3. Step 3: Cross multiply
    1,684.60x = 2,324.90 × 1,021.82
  4. Step 4: Simplify right side
    1,684.60x = 2,375,620.25
  5. Step 5: Solve for x
    x = 2,375,620.25/1,684.60
  6. Step 6: Final answer
    x = 1,410.20

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1.5x scale

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.