Home / 5,421.54-7,482.39-3,183.63

Finding the Fourth Proportional to 5,421.54, 7,482.39 and 3,183.63

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Solution

The fourth proportional to 5,421.54, 7,482.39 and 3,183.63 is: 4,393.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.54 : 7,482.39 = 3,183.63 : x
  2. Step 2: Convert to fraction form
    5,421.54/7,482.39 = 3,183.63/x
  3. Step 3: Cross multiply
    5,421.54x = 7,482.39 × 3,183.63
  4. Step 4: Simplify right side
    5,421.54x = 23,821,123.86
  5. Step 5: Solve for x
    x = 23,821,123.86/5,421.54
  6. Step 6: Final answer
    x = 4,393.79

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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.