Home / 1,956.11-2,699.55-1,291.79

Finding the Fourth Proportional to 1,956.11, 2,699.55 and 1,291.79

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Solution

The fourth proportional to 1,956.11, 2,699.55 and 1,291.79 is: 1,782.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956.11 : 2,699.55 = 1,291.79 : x
  2. Step 2: Convert to fraction form
    1,956.11/2,699.55 = 1,291.79/x
  3. Step 3: Cross multiply
    1,956.11x = 2,699.55 × 1,291.79
  4. Step 4: Simplify right side
    1,956.11x = 3,487,258.44
  5. Step 5: Solve for x
    x = 3,487,258.44/1,956.11
  6. Step 6: Final answer
    x = 1,782.76

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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.