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Finding the Fourth Proportional to 2,749.32, 4,122.94 and 993.86

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Solution

The fourth proportional to 2,749.32, 4,122.94 and 993.86 is: 1,490.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.32 : 4,122.94 = 993.86 : x
  2. Step 2: Convert to fraction form
    2,749.32/4,122.94 = 993.86/x
  3. Step 3: Cross multiply
    2,749.32x = 4,122.94 × 993.86
  4. Step 4: Simplify right side
    2,749.32x = 4,097,625.15
  5. Step 5: Solve for x
    x = 4,097,625.15/2,749.32
  6. Step 6: Final answer
    x = 1,490.41

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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.