Home / 2,120.50-2,924.36-1,821.66

Finding the Fourth Proportional to 2,120.50, 2,924.36 and 1,821.66

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Solution

The fourth proportional to 2,120.50, 2,924.36 and 1,821.66 is: 2,512.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.50 : 2,924.36 = 1,821.66 : x
  2. Step 2: Convert to fraction form
    2,120.50/2,924.36 = 1,821.66/x
  3. Step 3: Cross multiply
    2,120.50x = 2,924.36 × 1,821.66
  4. Step 4: Simplify right side
    2,120.50x = 5,327,189.64
  5. Step 5: Solve for x
    x = 5,327,189.64/2,120.50
  6. Step 6: Final answer
    x = 2,512.23

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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.