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Finding the Fourth Proportional to 1,736.29, 2,602.68 and 868.78

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Solution

The fourth proportional to 1,736.29, 2,602.68 and 868.78 is: 1,302.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736.29 : 2,602.68 = 868.78 : x
  2. Step 2: Convert to fraction form
    1,736.29/2,602.68 = 868.78/x
  3. Step 3: Cross multiply
    1,736.29x = 2,602.68 × 868.78
  4. Step 4: Simplify right side
    1,736.29x = 2,261,156.33
  5. Step 5: Solve for x
    x = 2,261,156.33/1,736.29
  6. Step 6: Final answer
    x = 1,302.29

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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.