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Finding the Fourth Proportional to 2,950, 4,071 and 1,708.72

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Solution

The fourth proportional to 2,950, 4,071 and 1,708.72 is: 2,358.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,950 : 4,071 = 1,708.72 : x
  2. Step 2: Convert to fraction form
    2,950/4,071 = 1,708.72/x
  3. Step 3: Cross multiply
    2,950x = 4,071 × 1,708.72
  4. Step 4: Simplify right side
    2,950x = 6,956,199.12
  5. Step 5: Solve for x
    x = 6,956,199.12/2,950
  6. Step 6: Final answer
    x = 2,358.03

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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.