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Finding the Third Proportional to 684 and 1,607.63

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Solution

The third proportional to 684 and 1,607.63 is: 3,778.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    684 : 1,607.63 = 1,607.63 : x
  2. Step 2: Convert to fraction form
    684/1,607.63 = 1,607.63/x
  3. Step 3: Cross multiply
    684x = 1,607.63 × 1,607.63
  4. Step 4: Simplify right side
    684x = 2,584,458.14
  5. Step 5: Solve for x
    x = 2,584,458.14/684
  6. Step 6: Final answer
    x = 3,778.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.