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Finding the Fourth Proportional to 5,989.46, 8,990.46 and 2,872.10

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Solution

The fourth proportional to 5,989.46, 8,990.46 and 2,872.10 is: 4,311.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,989.46 : 8,990.46 = 2,872.10 : x
  2. Step 2: Convert to fraction form
    5,989.46/8,990.46 = 2,872.10/x
  3. Step 3: Cross multiply
    5,989.46x = 8,990.46 × 2,872.10
  4. Step 4: Simplify right side
    5,989.46x = 25,821,522.64
  5. Step 5: Solve for x
    x = 25,821,522.64/5,989.46
  6. Step 6: Final answer
    x = 4,311.16

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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.