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Finding the Fourth Proportional to 4,990.92, 6,893.04 and 3,885.16

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Solution

The fourth proportional to 4,990.92, 6,893.04 and 3,885.16 is: 5,365.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.92 : 6,893.04 = 3,885.16 : x
  2. Step 2: Convert to fraction form
    4,990.92/6,893.04 = 3,885.16/x
  3. Step 3: Cross multiply
    4,990.92x = 6,893.04 × 3,885.16
  4. Step 4: Simplify right side
    4,990.92x = 26,780,563.29
  5. Step 5: Solve for x
    x = 26,780,563.29/4,990.92
  6. Step 6: Final answer
    x = 5,365.86

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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.