Home / 5,339.87-7,369.42-3,930.01

Finding the Fourth Proportional to 5,339.87, 7,369.42 and 3,930.01

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Solution

The fourth proportional to 5,339.87, 7,369.42 and 3,930.01 is: 5,423.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,339.87 : 7,369.42 = 3,930.01 : x
  2. Step 2: Convert to fraction form
    5,339.87/7,369.42 = 3,930.01/x
  3. Step 3: Cross multiply
    5,339.87x = 7,369.42 × 3,930.01
  4. Step 4: Simplify right side
    5,339.87x = 28,961,857.45
  5. Step 5: Solve for x
    x = 28,961,857.45/5,339.87
  6. Step 6: Final answer
    x = 5,423.71

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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.