Home / 5,623.78-7,760.81-3,105.69

Finding the Fourth Proportional to 5,623.78, 7,760.81 and 3,105.69

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Solution

The fourth proportional to 5,623.78, 7,760.81 and 3,105.69 is: 4,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,623.78 : 7,760.81 = 3,105.69 : x
  2. Step 2: Convert to fraction form
    5,623.78/7,760.81 = 3,105.69/x
  3. Step 3: Cross multiply
    5,623.78x = 7,760.81 × 3,105.69
  4. Step 4: Simplify right side
    5,623.78x = 24,102,692.32
  5. Step 5: Solve for x
    x = 24,102,692.32/5,623.78
  6. Step 6: Final answer
    x = 4,285.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.