Home / 2,920.18-4,029.68-1,661.22

Finding the Fourth Proportional to 2,920.18, 4,029.68 and 1,661.22

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Solution

The fourth proportional to 2,920.18, 4,029.68 and 1,661.22 is: 2,292.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.18 : 4,029.68 = 1,661.22 : x
  2. Step 2: Convert to fraction form
    2,920.18/4,029.68 = 1,661.22/x
  3. Step 3: Cross multiply
    2,920.18x = 4,029.68 × 1,661.22
  4. Step 4: Simplify right side
    2,920.18x = 6,694,185.01
  5. Step 5: Solve for x
    x = 6,694,185.01/2,920.18
  6. Step 6: Final answer
    x = 2,292.39

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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.