Home / 1,684.21-2,324.20-938.16

Finding the Fourth Proportional to 1,684.21, 2,324.20 and 938.16

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Solution

The fourth proportional to 1,684.21, 2,324.20 and 938.16 is: 1,294.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.21 : 2,324.20 = 938.16 : x
  2. Step 2: Convert to fraction form
    1,684.21/2,324.20 = 938.16/x
  3. Step 3: Cross multiply
    1,684.21x = 2,324.20 × 938.16
  4. Step 4: Simplify right side
    1,684.21x = 2,180,465.01
  5. Step 5: Solve for x
    x = 2,180,465.01/1,684.21
  6. Step 6: Final answer
    x = 1,294.66

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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.