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Finding the Third Proportional to 1,487.81 and 2,125.13

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Solution

The third proportional to 1,487.81 and 2,125.13 is: 3,035.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.81 : 2,125.13 = 2,125.13 : x
  2. Step 2: Convert to fraction form
    1,487.81/2,125.13 = 2,125.13/x
  3. Step 3: Cross multiply
    1,487.81x = 2,125.13 × 2,125.13
  4. Step 4: Simplify right side
    1,487.81x = 4,516,156.27
  5. Step 5: Solve for x
    x = 4,516,156.27/1,487.81
  6. Step 6: Final answer
    x = 3,035.43

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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.