Home / 3,005.71-4,147.61-1,679.23

Finding the Fourth Proportional to 3,005.71, 4,147.61 and 1,679.23

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Solution

The fourth proportional to 3,005.71, 4,147.61 and 1,679.23 is: 2,317.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.71 : 4,147.61 = 1,679.23 : x
  2. Step 2: Convert to fraction form
    3,005.71/4,147.61 = 1,679.23/x
  3. Step 3: Cross multiply
    3,005.71x = 4,147.61 × 1,679.23
  4. Step 4: Simplify right side
    3,005.71x = 6,964,791.14
  5. Step 5: Solve for x
    x = 6,964,791.14/3,005.71
  6. Step 6: Final answer
    x = 2,317.19

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1.5x scale

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.