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Finding the Third Proportional to 1,368.30 and 2,975.80

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Solution

The third proportional to 1,368.30 and 2,975.80 is: 6,471.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.30 : 2,975.80 = 2,975.80 : x
  2. Step 2: Convert to fraction form
    1,368.30/2,975.80 = 2,975.80/x
  3. Step 3: Cross multiply
    1,368.30x = 2,975.80 × 2,975.80
  4. Step 4: Simplify right side
    1,368.30x = 8,855,390.29
  5. Step 5: Solve for x
    x = 8,855,390.29/1,368.30
  6. Step 6: Final answer
    x = 6,471.82

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.