Home / 2,309.16-3,186.66-1,261.22

Finding the Fourth Proportional to 2,309.16, 3,186.66 and 1,261.22

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Solution

The fourth proportional to 2,309.16, 3,186.66 and 1,261.22 is: 1,740.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.16 : 3,186.66 = 1,261.22 : x
  2. Step 2: Convert to fraction form
    2,309.16/3,186.66 = 1,261.22/x
  3. Step 3: Cross multiply
    2,309.16x = 3,186.66 × 1,261.22
  4. Step 4: Simplify right side
    2,309.16x = 4,019,063.39
  5. Step 5: Solve for x
    x = 4,019,063.39/2,309.16
  6. Step 6: Final answer
    x = 1,740.49

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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.