Home / 5,623.80-7,760.63-3,105.86

Finding the Fourth Proportional to 5,623.80, 7,760.63 and 3,105.86

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Solution

The fourth proportional to 5,623.80, 7,760.63 and 3,105.86 is: 4,285.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,623.80 : 7,760.63 = 3,105.86 : x
  2. Step 2: Convert to fraction form
    5,623.80/7,760.63 = 3,105.86/x
  3. Step 3: Cross multiply
    5,623.80x = 7,760.63 × 3,105.86
  4. Step 4: Simplify right side
    5,623.80x = 24,103,401.10
  5. Step 5: Solve for x
    x = 24,103,401.10/5,623.80
  6. Step 6: Final answer
    x = 4,285.96

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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.