Home / 1,945.63-2,684.97-1,247.05

Finding the Fourth Proportional to 1,945.63, 2,684.97 and 1,247.05

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Solution

The fourth proportional to 1,945.63, 2,684.97 and 1,247.05 is: 1,720.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.63 : 2,684.97 = 1,247.05 : x
  2. Step 2: Convert to fraction form
    1,945.63/2,684.97 = 1,247.05/x
  3. Step 3: Cross multiply
    1,945.63x = 2,684.97 × 1,247.05
  4. Step 4: Simplify right side
    1,945.63x = 3,348,272.18
  5. Step 5: Solve for x
    x = 3,348,272.18/1,945.63
  6. Step 6: Final answer
    x = 1,720.92

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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.