Home / 2,389.20-3,583.38-928.38

Finding the Fourth Proportional to 2,389.20, 3,583.38 and 928.38

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Solution

The fourth proportional to 2,389.20, 3,583.38 and 928.38 is: 1,392.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.20 : 3,583.38 = 928.38 : x
  2. Step 2: Convert to fraction form
    2,389.20/3,583.38 = 928.38/x
  3. Step 3: Cross multiply
    2,389.20x = 3,583.38 × 928.38
  4. Step 4: Simplify right side
    2,389.20x = 3,326,738.32
  5. Step 5: Solve for x
    x = 3,326,738.32/2,389.20
  6. Step 6: Final answer
    x = 1,392.41

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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.