Home / 3,114.45-4,672.20-923.40

Finding the Fourth Proportional to 3,114.45, 4,672.20 and 923.40

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Solution

The fourth proportional to 3,114.45, 4,672.20 and 923.40 is: 1,385.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,114.45 : 4,672.20 = 923.40 : x
  2. Step 2: Convert to fraction form
    3,114.45/4,672.20 = 923.40/x
  3. Step 3: Cross multiply
    3,114.45x = 4,672.20 × 923.40
  4. Step 4: Simplify right side
    3,114.45x = 4,314,309.48
  5. Step 5: Solve for x
    x = 4,314,309.48/3,114.45
  6. Step 6: Final answer
    x = 1,385.26

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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.