Home / 1,964.25-2,710.79-1,218.71

Finding the Fourth Proportional to 1,964.25, 2,710.79 and 1,218.71

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Solution

The fourth proportional to 1,964.25, 2,710.79 and 1,218.71 is: 1,681.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.25 : 2,710.79 = 1,218.71 : x
  2. Step 2: Convert to fraction form
    1,964.25/2,710.79 = 1,218.71/x
  3. Step 3: Cross multiply
    1,964.25x = 2,710.79 × 1,218.71
  4. Step 4: Simplify right side
    1,964.25x = 3,303,647.23
  5. Step 5: Solve for x
    x = 3,303,647.23/1,964.25
  6. Step 6: Final answer
    x = 1,681.89

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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.