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Finding the Fourth Proportional to 1,738.80, 2,606.16 and 871.32

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Solution

The fourth proportional to 1,738.80, 2,606.16 and 871.32 is: 1,305.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738.80 : 2,606.16 = 871.32 : x
  2. Step 2: Convert to fraction form
    1,738.80/2,606.16 = 871.32/x
  3. Step 3: Cross multiply
    1,738.80x = 2,606.16 × 871.32
  4. Step 4: Simplify right side
    1,738.80x = 2,270,799.33
  5. Step 5: Solve for x
    x = 2,270,799.33/1,738.80
  6. Step 6: Final answer
    x = 1,305.96

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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.