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Finding the Third Proportional to 1,972.13 and 2,558.81

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Solution

The third proportional to 1,972.13 and 2,558.81 is: 3,320.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.13 : 2,558.81 = 2,558.81 : x
  2. Step 2: Convert to fraction form
    1,972.13/2,558.81 = 2,558.81/x
  3. Step 3: Cross multiply
    1,972.13x = 2,558.81 × 2,558.81
  4. Step 4: Simplify right side
    1,972.13x = 6,547,521.41
  5. Step 5: Solve for x
    x = 6,547,521.41/1,972.13
  6. Step 6: Final answer
    x = 3,320.03

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.