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Finding the Fourth Proportional to 3,955.07, 5,453.49 and 2,696.86

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Solution

The fourth proportional to 3,955.07, 5,453.49 and 2,696.86 is: 3,718.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.07 : 5,453.49 = 2,696.86 : x
  2. Step 2: Convert to fraction form
    3,955.07/5,453.49 = 2,696.86/x
  3. Step 3: Cross multiply
    3,955.07x = 5,453.49 × 2,696.86
  4. Step 4: Simplify right side
    3,955.07x = 14,707,299.04
  5. Step 5: Solve for x
    x = 14,707,299.04/3,955.07
  6. Step 6: Final answer
    x = 3,718.59

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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.