Home / 1,684.19-2,516.54-1,286.69

Finding the Fourth Proportional to 1,684.19, 2,516.54 and 1,286.69

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Solution

The fourth proportional to 1,684.19, 2,516.54 and 1,286.69 is: 1,922.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.19 : 2,516.54 = 1,286.69 : x
  2. Step 2: Convert to fraction form
    1,684.19/2,516.54 = 1,286.69/x
  3. Step 3: Cross multiply
    1,684.19x = 2,516.54 × 1,286.69
  4. Step 4: Simplify right side
    1,684.19x = 3,237,987.84
  5. Step 5: Solve for x
    x = 3,237,987.84/1,684.19
  6. Step 6: Final answer
    x = 1,922.58

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1.5x scale

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.