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Finding the Fourth Proportional to 1,738.67, 2,606.79 and 872.51

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Solution

The fourth proportional to 1,738.67, 2,606.79 and 872.51 is: 1,308.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738.67 : 2,606.79 = 872.51 : x
  2. Step 2: Convert to fraction form
    1,738.67/2,606.79 = 872.51/x
  3. Step 3: Cross multiply
    1,738.67x = 2,606.79 × 872.51
  4. Step 4: Simplify right side
    1,738.67x = 2,274,450.34
  5. Step 5: Solve for x
    x = 2,274,450.34/1,738.67
  6. Step 6: Final answer
    x = 1,308.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.