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Finding the Fourth Proportional to 1,961.69, 2,701.21 and 1,695.66

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Solution

The fourth proportional to 1,961.69, 2,701.21 and 1,695.66 is: 2,334.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.69 : 2,701.21 = 1,695.66 : x
  2. Step 2: Convert to fraction form
    1,961.69/2,701.21 = 1,695.66/x
  3. Step 3: Cross multiply
    1,961.69x = 2,701.21 × 1,695.66
  4. Step 4: Simplify right side
    1,961.69x = 4,580,311.76
  5. Step 5: Solve for x
    x = 4,580,311.76/1,961.69
  6. Step 6: Final answer
    x = 2,334.89

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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.