Home / 2,146.43-2,960.70-1,391.19

Finding the Fourth Proportional to 2,146.43, 2,960.70 and 1,391.19

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Solution

The fourth proportional to 2,146.43, 2,960.70 and 1,391.19 is: 1,918.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.43 : 2,960.70 = 1,391.19 : x
  2. Step 2: Convert to fraction form
    2,146.43/2,960.70 = 1,391.19/x
  3. Step 3: Cross multiply
    2,146.43x = 2,960.70 × 1,391.19
  4. Step 4: Simplify right side
    2,146.43x = 4,118,896.23
  5. Step 5: Solve for x
    x = 4,118,896.23/2,146.43
  6. Step 6: Final answer
    x = 1,918.96

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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.