Home / 2,309.37-3,186.91-1,261.43

Finding the Fourth Proportional to 2,309.37, 3,186.91 and 1,261.43

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Solution

The fourth proportional to 2,309.37, 3,186.91 and 1,261.43 is: 1,740.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.37 : 3,186.91 = 1,261.43 : x
  2. Step 2: Convert to fraction form
    2,309.37/3,186.91 = 1,261.43/x
  3. Step 3: Cross multiply
    2,309.37x = 3,186.91 × 1,261.43
  4. Step 4: Simplify right side
    2,309.37x = 4,020,063.88
  5. Step 5: Solve for x
    x = 4,020,063.88/2,309.37
  6. Step 6: Final answer
    x = 1,740.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.