Home / 4,945.96-7,421.02-2,171.20

Finding the Fourth Proportional to 4,945.96, 7,421.02 and 2,171.20

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Solution

The fourth proportional to 4,945.96, 7,421.02 and 2,171.20 is: 3,257.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,945.96 : 7,421.02 = 2,171.20 : x
  2. Step 2: Convert to fraction form
    4,945.96/7,421.02 = 2,171.20/x
  3. Step 3: Cross multiply
    4,945.96x = 7,421.02 × 2,171.20
  4. Step 4: Simplify right side
    4,945.96x = 16,112,518.62
  5. Step 5: Solve for x
    x = 16,112,518.62/4,945.96
  6. Step 6: Final answer
    x = 3,257.71

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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.