Home / 2,860.38-3,946.64-1,811.84

Finding the Fourth Proportional to 2,860.38, 3,946.64 and 1,811.84

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Solution

The fourth proportional to 2,860.38, 3,946.64 and 1,811.84 is: 2,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.38 : 3,946.64 = 1,811.84 : x
  2. Step 2: Convert to fraction form
    2,860.38/3,946.64 = 1,811.84/x
  3. Step 3: Cross multiply
    2,860.38x = 3,946.64 × 1,811.84
  4. Step 4: Simplify right side
    2,860.38x = 7,150,651.43
  5. Step 5: Solve for x
    x = 7,150,651.43/2,860.38
  6. Step 6: Final answer
    x = 2,499.90

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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.