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Finding the Fourth Proportional to 4,999.72, 6,899.78 and 2,761.67

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Solution

The fourth proportional to 4,999.72, 6,899.78 and 2,761.67 is: 3,811.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,999.72 : 6,899.78 = 2,761.67 : x
  2. Step 2: Convert to fraction form
    4,999.72/6,899.78 = 2,761.67/x
  3. Step 3: Cross multiply
    4,999.72x = 6,899.78 × 2,761.67
  4. Step 4: Simplify right side
    4,999.72x = 19,054,915.43
  5. Step 5: Solve for x
    x = 19,054,915.43/4,999.72
  6. Step 6: Final answer
    x = 3,811.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.