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Finding the Third Proportional to 1,359.56 and 1,931.06

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Solution

The third proportional to 1,359.56 and 1,931.06 is: 2,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.56 : 1,931.06 = 1,931.06 : x
  2. Step 2: Convert to fraction form
    1,359.56/1,931.06 = 1,931.06/x
  3. Step 3: Cross multiply
    1,359.56x = 1,931.06 × 1,931.06
  4. Step 4: Simplify right side
    1,359.56x = 3,729,002.38
  5. Step 5: Solve for x
    x = 3,729,002.38/1,359.56
  6. Step 6: Final answer
    x = 2,742.80

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.