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Finding the Fourth Proportional to 2,749.90, 4,124.38 and 994.56

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Solution

The fourth proportional to 2,749.90, 4,124.38 and 994.56 is: 1,491.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.90 : 4,124.38 = 994.56 : x
  2. Step 2: Convert to fraction form
    2,749.90/4,124.38 = 994.56/x
  3. Step 3: Cross multiply
    2,749.90x = 4,124.38 × 994.56
  4. Step 4: Simplify right side
    2,749.90x = 4,101,943.37
  5. Step 5: Solve for x
    x = 4,101,943.37/2,749.90
  6. Step 6: Final answer
    x = 1,491.67

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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.