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Finding the Fourth Proportional to 1,684.97, 2,325.19 and 938.92

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Solution

The fourth proportional to 1,684.97, 2,325.19 and 938.92 is: 1,295.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.97 : 2,325.19 = 938.92 : x
  2. Step 2: Convert to fraction form
    1,684.97/2,325.19 = 938.92/x
  3. Step 3: Cross multiply
    1,684.97x = 2,325.19 × 938.92
  4. Step 4: Simplify right side
    1,684.97x = 2,183,161.58
  5. Step 5: Solve for x
    x = 2,183,161.58/1,684.97
  6. Step 6: Final answer
    x = 1,295.67

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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.