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Finding the Fourth Proportional to 5,821.96, 8,744.10 and 4,990.90

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Solution

The fourth proportional to 5,821.96, 8,744.10 and 4,990.90 is: 7,495.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,821.96 : 8,744.10 = 4,990.90 : x
  2. Step 2: Convert to fraction form
    5,821.96/8,744.10 = 4,990.90/x
  3. Step 3: Cross multiply
    5,821.96x = 8,744.10 × 4,990.90
  4. Step 4: Simplify right side
    5,821.96x = 43,640,928.69
  5. Step 5: Solve for x
    x = 43,640,928.69/5,821.96
  6. Step 6: Final answer
    x = 7,495.92

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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.