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Finding the Fourth Proportional to 1,696.23, 2,542.59 and 872.67

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Solution

The fourth proportional to 1,696.23, 2,542.59 and 872.67 is: 1,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,696.23 : 2,542.59 = 872.67 : x
  2. Step 2: Convert to fraction form
    1,696.23/2,542.59 = 872.67/x
  3. Step 3: Cross multiply
    1,696.23x = 2,542.59 × 872.67
  4. Step 4: Simplify right side
    1,696.23x = 2,218,842.02
  5. Step 5: Solve for x
    x = 2,218,842.02/1,696.23
  6. Step 6: Final answer
    x = 1,308.10

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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.