Home / 1,821.45-2,734.20-999.75

Finding the Fourth Proportional to 1,821.45, 2,734.20 and 999.75

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Solution

The fourth proportional to 1,821.45, 2,734.20 and 999.75 is: 1,500.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.45 : 2,734.20 = 999.75 : x
  2. Step 2: Convert to fraction form
    1,821.45/2,734.20 = 999.75/x
  3. Step 3: Cross multiply
    1,821.45x = 2,734.20 × 999.75
  4. Step 4: Simplify right side
    1,821.45x = 2,733,516.45
  5. Step 5: Solve for x
    x = 2,733,516.45/1,821.45
  6. Step 6: Final answer
    x = 1,500.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.