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Finding the Third Proportional to 2,990.04 and 4,280.03

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Solution

The third proportional to 2,990.04 and 4,280.03 is: 6,126.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.04 : 4,280.03 = 4,280.03 : x
  2. Step 2: Convert to fraction form
    2,990.04/4,280.03 = 4,280.03/x
  3. Step 3: Cross multiply
    2,990.04x = 4,280.03 × 4,280.03
  4. Step 4: Simplify right side
    2,990.04x = 18,318,634.06
  5. Step 5: Solve for x
    x = 18,318,634.06/2,990.04
  6. Step 6: Final answer
    x = 6,126.55

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.