Home / 1,945.08-2,684.36-1,680.24

Finding the Fourth Proportional to 1,945.08, 2,684.36 and 1,680.24

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Solution

The fourth proportional to 1,945.08, 2,684.36 and 1,680.24 is: 2,318.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.08 : 2,684.36 = 1,680.24 : x
  2. Step 2: Convert to fraction form
    1,945.08/2,684.36 = 1,680.24/x
  3. Step 3: Cross multiply
    1,945.08x = 2,684.36 × 1,680.24
  4. Step 4: Simplify right side
    1,945.08x = 4,510,369.05
  5. Step 5: Solve for x
    x = 4,510,369.05/1,945.08
  6. Step 6: Final answer
    x = 2,318.86

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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.