Home / 3,049.23-4,574.01-857.78

Finding the Fourth Proportional to 3,049.23, 4,574.01 and 857.78

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Solution

The fourth proportional to 3,049.23, 4,574.01 and 857.78 is: 1,286.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,049.23 : 4,574.01 = 857.78 : x
  2. Step 2: Convert to fraction form
    3,049.23/4,574.01 = 857.78/x
  3. Step 3: Cross multiply
    3,049.23x = 4,574.01 × 857.78
  4. Step 4: Simplify right side
    3,049.23x = 3,923,494.30
  5. Step 5: Solve for x
    x = 3,923,494.30/3,049.23
  6. Step 6: Final answer
    x = 1,286.72

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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.