Home / 2,116.31-2,920.48-1,668.65

Finding the Fourth Proportional to 2,116.31, 2,920.48 and 1,668.65

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Solution

The fourth proportional to 2,116.31, 2,920.48 and 1,668.65 is: 2,302.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.31 : 2,920.48 = 1,668.65 : x
  2. Step 2: Convert to fraction form
    2,116.31/2,920.48 = 1,668.65/x
  3. Step 3: Cross multiply
    2,116.31x = 2,920.48 × 1,668.65
  4. Step 4: Simplify right side
    2,116.31x = 4,873,262.08
  5. Step 5: Solve for x
    x = 4,873,262.08/2,116.31
  6. Step 6: Final answer
    x = 2,302.71

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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.