Home / 3,115.22-4,672.02-923.36

Finding the Fourth Proportional to 3,115.22, 4,672.02 and 923.36

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Solution

The fourth proportional to 3,115.22, 4,672.02 and 923.36 is: 1,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.22 : 4,672.02 = 923.36 : x
  2. Step 2: Convert to fraction form
    3,115.22/4,672.02 = 923.36/x
  3. Step 3: Cross multiply
    3,115.22x = 4,672.02 × 923.36
  4. Step 4: Simplify right side
    3,115.22x = 4,313,956.39
  5. Step 5: Solve for x
    x = 4,313,956.39/3,115.22
  6. Step 6: Final answer
    x = 1,384.80

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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.