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Finding the Fourth Proportional to 2,708.88, 3,738.84 and 1,715.49

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Solution

The fourth proportional to 2,708.88, 3,738.84 and 1,715.49 is: 2,367.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,708.88 : 3,738.84 = 1,715.49 : x
  2. Step 2: Convert to fraction form
    2,708.88/3,738.84 = 1,715.49/x
  3. Step 3: Cross multiply
    2,708.88x = 3,738.84 × 1,715.49
  4. Step 4: Simplify right side
    2,708.88x = 6,413,942.63
  5. Step 5: Solve for x
    x = 6,413,942.63/2,708.88
  6. Step 6: Final answer
    x = 2,367.75

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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.