Home / 1,945.19-2,685.27-1,246.97

Finding the Fourth Proportional to 1,945.19, 2,685.27 and 1,246.97

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Solution

The fourth proportional to 1,945.19, 2,685.27 and 1,246.97 is: 1,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.19 : 2,685.27 = 1,246.97 : x
  2. Step 2: Convert to fraction form
    1,945.19/2,685.27 = 1,246.97/x
  3. Step 3: Cross multiply
    1,945.19x = 2,685.27 × 1,246.97
  4. Step 4: Simplify right side
    1,945.19x = 3,348,451.13
  5. Step 5: Solve for x
    x = 3,348,451.13/1,945.19
  6. Step 6: Final answer
    x = 1,721.40

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Double scale
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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.