Home / 1,964.97-2,712.45-1,219.77

Finding the Fourth Proportional to 1,964.97, 2,712.45 and 1,219.77

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Solution

The fourth proportional to 1,964.97, 2,712.45 and 1,219.77 is: 1,683.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.97 : 2,712.45 = 1,219.77 : x
  2. Step 2: Convert to fraction form
    1,964.97/2,712.45 = 1,219.77/x
  3. Step 3: Cross multiply
    1,964.97x = 2,712.45 × 1,219.77
  4. Step 4: Simplify right side
    1,964.97x = 3,308,565.14
  5. Step 5: Solve for x
    x = 3,308,565.14/1,964.97
  6. Step 6: Final answer
    x = 1,683.77

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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.