Home / 3,112.34-4,669.32-1,380.56

Finding the Fourth Proportional to 3,112.34, 4,669.32 and 1,380.56

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Solution

The fourth proportional to 3,112.34, 4,669.32 and 1,380.56 is: 2,071.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.34 : 4,669.32 = 1,380.56 : x
  2. Step 2: Convert to fraction form
    3,112.34/4,669.32 = 1,380.56/x
  3. Step 3: Cross multiply
    3,112.34x = 4,669.32 × 1,380.56
  4. Step 4: Simplify right side
    3,112.34x = 6,446,276.42
  5. Step 5: Solve for x
    x = 6,446,276.42/3,112.34
  6. Step 6: Final answer
    x = 2,071.20

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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.