Home / 1,945.92-2,684.16-1,246.40

Finding the Fourth Proportional to 1,945.92, 2,684.16 and 1,246.40

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Solution

The fourth proportional to 1,945.92, 2,684.16 and 1,246.40 is: 1,719.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.92 : 2,684.16 = 1,246.40 : x
  2. Step 2: Convert to fraction form
    1,945.92/2,684.16 = 1,246.40/x
  3. Step 3: Cross multiply
    1,945.92x = 2,684.16 × 1,246.40
  4. Step 4: Simplify right side
    1,945.92x = 3,345,537.02
  5. Step 5: Solve for x
    x = 3,345,537.02/1,945.92
  6. Step 6: Final answer
    x = 1,719.26

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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.