Home / 3,071.32-4,607.89-1,221.38

Finding the Fourth Proportional to 3,071.32, 4,607.89 and 1,221.38

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Solution

The fourth proportional to 3,071.32, 4,607.89 and 1,221.38 is: 1,832.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.32 : 4,607.89 = 1,221.38 : x
  2. Step 2: Convert to fraction form
    3,071.32/4,607.89 = 1,221.38/x
  3. Step 3: Cross multiply
    3,071.32x = 4,607.89 × 1,221.38
  4. Step 4: Simplify right side
    3,071.32x = 5,627,975.87
  5. Step 5: Solve for x
    x = 5,627,975.87/3,071.32
  6. Step 6: Final answer
    x = 1,832.43

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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.