Home / 1,964.03-2,709.68-1,217.72

Finding the Fourth Proportional to 1,964.03, 2,709.68 and 1,217.72

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Solution

The fourth proportional to 1,964.03, 2,709.68 and 1,217.72 is: 1,680.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.03 : 2,709.68 = 1,217.72 : x
  2. Step 2: Convert to fraction form
    1,964.03/2,709.68 = 1,217.72/x
  3. Step 3: Cross multiply
    1,964.03x = 2,709.68 × 1,217.72
  4. Step 4: Simplify right side
    1,964.03x = 3,299,617.98
  5. Step 5: Solve for x
    x = 3,299,617.98/1,964.03
  6. Step 6: Final answer
    x = 1,680.03

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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.