Home / 1,684.12-2,323.92-938.05

Finding the Fourth Proportional to 1,684.12, 2,323.92 and 938.05

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Solution

The fourth proportional to 1,684.12, 2,323.92 and 938.05 is: 1,294.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.12 : 2,323.92 = 938.05 : x
  2. Step 2: Convert to fraction form
    1,684.12/2,323.92 = 938.05/x
  3. Step 3: Cross multiply
    1,684.12x = 2,323.92 × 938.05
  4. Step 4: Simplify right side
    1,684.12x = 2,179,953.16
  5. Step 5: Solve for x
    x = 2,179,953.16/1,684.12
  6. Step 6: Final answer
    x = 1,294.42

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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.