Home / 3,520.53-5,280.84-923.40

Finding the Fourth Proportional to 3,520.53, 5,280.84 and 923.40

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Solution

The fourth proportional to 3,520.53, 5,280.84 and 923.40 is: 1,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.53 : 5,280.84 = 923.40 : x
  2. Step 2: Convert to fraction form
    3,520.53/5,280.84 = 923.40/x
  3. Step 3: Cross multiply
    3,520.53x = 5,280.84 × 923.40
  4. Step 4: Simplify right side
    3,520.53x = 4,876,327.66
  5. Step 5: Solve for x
    x = 4,876,327.66/3,520.53
  6. Step 6: Final answer
    x = 1,385.11

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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.