Home / 2,851.24-3,932.58-1,919.56

Finding the Fourth Proportional to 2,851.24, 3,932.58 and 1,919.56

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Solution

The fourth proportional to 2,851.24, 3,932.58 and 1,919.56 is: 2,647.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.24 : 3,932.58 = 1,919.56 : x
  2. Step 2: Convert to fraction form
    2,851.24/3,932.58 = 1,919.56/x
  3. Step 3: Cross multiply
    2,851.24x = 3,932.58 × 1,919.56
  4. Step 4: Simplify right side
    2,851.24x = 7,548,823.26
  5. Step 5: Solve for x
    x = 7,548,823.26/2,851.24
  6. Step 6: Final answer
    x = 2,647.56

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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.