Home / 5,221.54-7,830.37-3,660.74

Finding the Fourth Proportional to 5,221.54, 7,830.37 and 3,660.74

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Solution

The fourth proportional to 5,221.54, 7,830.37 and 3,660.74 is: 5,489.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.54 : 7,830.37 = 3,660.74 : x
  2. Step 2: Convert to fraction form
    5,221.54/7,830.37 = 3,660.74/x
  3. Step 3: Cross multiply
    5,221.54x = 7,830.37 × 3,660.74
  4. Step 4: Simplify right side
    5,221.54x = 28,664,930.37
  5. Step 5: Solve for x
    x = 28,664,930.37/5,221.54
  6. Step 6: Final answer
    x = 5,489.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.