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Finding the Third Proportional to 5,640 and 6,090

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Solution

The third proportional to 5,640 and 6,090 is: 6,575.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640 : 6,090 = 6,090 : x
  2. Step 2: Convert to fraction form
    5,640/6,090 = 6,090/x
  3. Step 3: Cross multiply
    5,640x = 6,090 × 6,090
  4. Step 4: Simplify right side
    5,640x = 37,088,100
  5. Step 5: Solve for x
    x = 37,088,100/5,640
  6. Step 6: Final answer
    x = 6,575.90

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.