Home / 3,705.12-5,114.64-2,308.56

Finding the Fourth Proportional to 3,705.12, 5,114.64 and 2,308.56

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Solution

The fourth proportional to 3,705.12, 5,114.64 and 2,308.56 is: 3,186.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.12 : 5,114.64 = 2,308.56 : x
  2. Step 2: Convert to fraction form
    3,705.12/5,114.64 = 2,308.56/x
  3. Step 3: Cross multiply
    3,705.12x = 5,114.64 × 2,308.56
  4. Step 4: Simplify right side
    3,705.12x = 11,807,453.32
  5. Step 5: Solve for x
    x = 11,807,453.32/3,705.12
  6. Step 6: Final answer
    x = 3,186.79

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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.