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Finding the Fourth Proportional to 2,392.75, 3,589.26 and 853.75

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Solution

The fourth proportional to 2,392.75, 3,589.26 and 853.75 is: 1,280.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,392.75 : 3,589.26 = 853.75 : x
  2. Step 2: Convert to fraction form
    2,392.75/3,589.26 = 853.75/x
  3. Step 3: Cross multiply
    2,392.75x = 3,589.26 × 853.75
  4. Step 4: Simplify right side
    2,392.75x = 3,064,330.73
  5. Step 5: Solve for x
    x = 3,064,330.73/2,392.75
  6. Step 6: Final answer
    x = 1,280.67

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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.