Home / 3,115.02-4,672.44-923.79

Finding the Fourth Proportional to 3,115.02, 4,672.44 and 923.79

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Solution

The fourth proportional to 3,115.02, 4,672.44 and 923.79 is: 1,385.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.02 : 4,672.44 = 923.79 : x
  2. Step 2: Convert to fraction form
    3,115.02/4,672.44 = 923.79/x
  3. Step 3: Cross multiply
    3,115.02x = 4,672.44 × 923.79
  4. Step 4: Simplify right side
    3,115.02x = 4,316,353.35
  5. Step 5: Solve for x
    x = 4,316,353.35/3,115.02
  6. Step 6: Final answer
    x = 1,385.66

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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.