Home / 1,961.30-2,956.05-1,690.66

Finding the Fourth Proportional to 1,961.30, 2,956.05 and 1,690.66

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Solution

The fourth proportional to 1,961.30, 2,956.05 and 1,690.66 is: 2,548.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.30 : 2,956.05 = 1,690.66 : x
  2. Step 2: Convert to fraction form
    1,961.30/2,956.05 = 1,690.66/x
  3. Step 3: Cross multiply
    1,961.30x = 2,956.05 × 1,690.66
  4. Step 4: Simplify right side
    1,961.30x = 4,997,675.49
  5. Step 5: Solve for x
    x = 4,997,675.49/1,961.30
  6. Step 6: Final answer
    x = 2,548.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.