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Finding the Third Proportional to 1,688.63 and 2,486.63

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Solution

The third proportional to 1,688.63 and 2,486.63 is: 3,661.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.63 : 2,486.63 = 2,486.63 : x
  2. Step 2: Convert to fraction form
    1,688.63/2,486.63 = 2,486.63/x
  3. Step 3: Cross multiply
    1,688.63x = 2,486.63 × 2,486.63
  4. Step 4: Simplify right side
    1,688.63x = 6,183,303.89
  5. Step 5: Solve for x
    x = 6,183,303.89/1,688.63
  6. Step 6: Final answer
    x = 3,661.74

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.