Home / 2,619.65-3,929.53-2,097.23

Finding the Fourth Proportional to 2,619.65, 3,929.53 and 2,097.23

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Solution

The fourth proportional to 2,619.65, 3,929.53 and 2,097.23 is: 3,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.65 : 3,929.53 = 2,097.23 : x
  2. Step 2: Convert to fraction form
    2,619.65/3,929.53 = 2,097.23/x
  3. Step 3: Cross multiply
    2,619.65x = 3,929.53 × 2,097.23
  4. Step 4: Simplify right side
    2,619.65x = 8,241,128.20
  5. Step 5: Solve for x
    x = 8,241,128.20/2,619.65
  6. Step 6: Final answer
    x = 3,145.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.