Home / 1,683.83-2,323.67-985.21

Finding the Fourth Proportional to 1,683.83, 2,323.67 and 985.21

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Solution

The fourth proportional to 1,683.83, 2,323.67 and 985.21 is: 1,359.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.83 : 2,323.67 = 985.21 : x
  2. Step 2: Convert to fraction form
    1,683.83/2,323.67 = 985.21/x
  3. Step 3: Cross multiply
    1,683.83x = 2,323.67 × 985.21
  4. Step 4: Simplify right side
    1,683.83x = 2,289,286.38
  5. Step 5: Solve for x
    x = 2,289,286.38/1,683.83
  6. Step 6: Final answer
    x = 1,359.57

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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.