Home / 7,285.15-10,919.22-3,385

Finding the Fourth Proportional to 7,285.15, 10,919.22 and 3,385

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Solution

The fourth proportional to 7,285.15, 10,919.22 and 3,385 is: 5,073.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,285.15 : 10,919.22 = 3,385 : x
  2. Step 2: Convert to fraction form
    7,285.15/10,919.22 = 3,385/x
  3. Step 3: Cross multiply
    7,285.15x = 10,919.22 × 3,385
  4. Step 4: Simplify right side
    7,285.15x = 36,961,559.70
  5. Step 5: Solve for x
    x = 36,961,559.70/7,285.15
  6. Step 6: Final answer
    x = 5,073.55

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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.