Home / 2,639.48-3,641.09-1,967.99

Finding the Fourth Proportional to 2,639.48, 3,641.09 and 1,967.99

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Solution

The fourth proportional to 2,639.48, 3,641.09 and 1,967.99 is: 2,714.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.48 : 3,641.09 = 1,967.99 : x
  2. Step 2: Convert to fraction form
    2,639.48/3,641.09 = 1,967.99/x
  3. Step 3: Cross multiply
    2,639.48x = 3,641.09 × 1,967.99
  4. Step 4: Simplify right side
    2,639.48x = 7,165,600.66
  5. Step 5: Solve for x
    x = 7,165,600.66/2,639.48
  6. Step 6: Final answer
    x = 2,714.78

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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.