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Finding the Fourth Proportional to 4,990.91, 6,893.85 and 4,339.67

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Solution

The fourth proportional to 4,990.91, 6,893.85 and 4,339.67 is: 5,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.91 : 6,893.85 = 4,339.67 : x
  2. Step 2: Convert to fraction form
    4,990.91/6,893.85 = 4,339.67/x
  3. Step 3: Cross multiply
    4,990.91x = 6,893.85 × 4,339.67
  4. Step 4: Simplify right side
    4,990.91x = 29,916,999.56
  5. Step 5: Solve for x
    x = 29,916,999.56/4,990.91
  6. Step 6: Final answer
    x = 5,994.30

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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.