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Finding the Fourth Proportional to 2,536.39, 3,804.60 and 687.49

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Solution

The fourth proportional to 2,536.39, 3,804.60 and 687.49 is: 1,031.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,536.39 : 3,804.60 = 687.49 : x
  2. Step 2: Convert to fraction form
    2,536.39/3,804.60 = 687.49/x
  3. Step 3: Cross multiply
    2,536.39x = 3,804.60 × 687.49
  4. Step 4: Simplify right side
    2,536.39x = 2,615,611.72
  5. Step 5: Solve for x
    x = 2,615,611.72/2,536.39
  6. Step 6: Final answer
    x = 1,031.23

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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.