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Finding the Fourth Proportional to 4,950.87, 7,426.31 and 1,990.67

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Solution

The fourth proportional to 4,950.87, 7,426.31 and 1,990.67 is: 2,986.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,950.87 : 7,426.31 = 1,990.67 : x
  2. Step 2: Convert to fraction form
    4,950.87/7,426.31 = 1,990.67/x
  3. Step 3: Cross multiply
    4,950.87x = 7,426.31 × 1,990.67
  4. Step 4: Simplify right side
    4,950.87x = 14,783,285.44
  5. Step 5: Solve for x
    x = 14,783,285.44/4,950.87
  6. Step 6: Final answer
    x = 2,986.00

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Similar ratio
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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.