Home / 2,485.05-3,728.64-926.21

Finding the Fourth Proportional to 2,485.05, 3,728.64 and 926.21

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Solution

The fourth proportional to 2,485.05, 3,728.64 and 926.21 is: 1,389.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.05 : 3,728.64 = 926.21 : x
  2. Step 2: Convert to fraction form
    2,485.05/3,728.64 = 926.21/x
  3. Step 3: Cross multiply
    2,485.05x = 3,728.64 × 926.21
  4. Step 4: Simplify right side
    2,485.05x = 3,453,503.65
  5. Step 5: Solve for x
    x = 3,453,503.65/2,485.05
  6. Step 6: Final answer
    x = 1,389.71

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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.