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Finding the Third Proportional to 1,431.66 and 1,900.13

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Solution

The third proportional to 1,431.66 and 1,900.13 is: 2,521.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.66 : 1,900.13 = 1,900.13 : x
  2. Step 2: Convert to fraction form
    1,431.66/1,900.13 = 1,900.13/x
  3. Step 3: Cross multiply
    1,431.66x = 1,900.13 × 1,900.13
  4. Step 4: Simplify right side
    1,431.66x = 3,610,475.02
  5. Step 5: Solve for x
    x = 3,610,475.02/1,431.66
  6. Step 6: Final answer
    x = 2,521.89

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.