Home / 2,818.42-3,888.84-1,933.90

Finding the Fourth Proportional to 2,818.42, 3,888.84 and 1,933.90

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Solution

The fourth proportional to 2,818.42, 3,888.84 and 1,933.90 is: 2,668.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.42 : 3,888.84 = 1,933.90 : x
  2. Step 2: Convert to fraction form
    2,818.42/3,888.84 = 1,933.90/x
  3. Step 3: Cross multiply
    2,818.42x = 3,888.84 × 1,933.90
  4. Step 4: Simplify right side
    2,818.42x = 7,520,627.68
  5. Step 5: Solve for x
    x = 7,520,627.68/2,818.42
  6. Step 6: Final answer
    x = 2,668.38

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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.