Home / 2,920.50-4,029.60-1,661.34

Finding the Fourth Proportional to 2,920.50, 4,029.60 and 1,661.34

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Solution

The fourth proportional to 2,920.50, 4,029.60 and 1,661.34 is: 2,292.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.50 : 4,029.60 = 1,661.34 : x
  2. Step 2: Convert to fraction form
    2,920.50/4,029.60 = 1,661.34/x
  3. Step 3: Cross multiply
    2,920.50x = 4,029.60 × 1,661.34
  4. Step 4: Simplify right side
    2,920.50x = 6,694,535.66
  5. Step 5: Solve for x
    x = 6,694,535.66/2,920.50
  6. Step 6: Final answer
    x = 2,292.26

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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.