Home / 3,930.96-5,423.04-3,330.90

Finding the Fourth Proportional to 3,930.96, 5,423.04 and 3,330.90

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Solution

The fourth proportional to 3,930.96, 5,423.04 and 3,330.90 is: 4,595.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.96 : 5,423.04 = 3,330.90 : x
  2. Step 2: Convert to fraction form
    3,930.96/5,423.04 = 3,330.90/x
  3. Step 3: Cross multiply
    3,930.96x = 5,423.04 × 3,330.90
  4. Step 4: Simplify right side
    3,930.96x = 18,063,603.94
  5. Step 5: Solve for x
    x = 18,063,603.94/3,930.96
  6. Step 6: Final answer
    x = 4,595.21

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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.