Home / 3,999.42-5,520.04-2,320.90

Finding the Fourth Proportional to 3,999.42, 5,520.04 and 2,320.90

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Solution

The fourth proportional to 3,999.42, 5,520.04 and 2,320.90 is: 3,203.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.42 : 5,520.04 = 2,320.90 : x
  2. Step 2: Convert to fraction form
    3,999.42/5,520.04 = 2,320.90/x
  3. Step 3: Cross multiply
    3,999.42x = 5,520.04 × 2,320.90
  4. Step 4: Simplify right side
    3,999.42x = 12,811,441.23
  5. Step 5: Solve for x
    x = 12,811,441.23/3,999.42
  6. Step 6: Final answer
    x = 3,203.32

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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.