Home / 3,115.18-4,672.79-923.93

Finding the Fourth Proportional to 3,115.18, 4,672.79 and 923.93

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Solution

The fourth proportional to 3,115.18, 4,672.79 and 923.93 is: 1,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.18 : 4,672.79 = 923.93 : x
  2. Step 2: Convert to fraction form
    3,115.18/4,672.79 = 923.93/x
  3. Step 3: Cross multiply
    3,115.18x = 4,672.79 × 923.93
  4. Step 4: Simplify right side
    3,115.18x = 4,317,326.25
  5. Step 5: Solve for x
    x = 4,317,326.25/3,115.18
  6. Step 6: Final answer
    x = 1,385.90

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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.