Home / 5,740.08-7,920.96-3,221.76

Finding the Fourth Proportional to 5,740.08, 7,920.96 and 3,221.76

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Solution

The fourth proportional to 5,740.08, 7,920.96 and 3,221.76 is: 4,445.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,740.08 : 7,920.96 = 3,221.76 : x
  2. Step 2: Convert to fraction form
    5,740.08/7,920.96 = 3,221.76/x
  3. Step 3: Cross multiply
    5,740.08x = 7,920.96 × 3,221.76
  4. Step 4: Simplify right side
    5,740.08x = 25,519,432.09
  5. Step 5: Solve for x
    x = 25,519,432.09/5,740.08
  6. Step 6: Final answer
    x = 4,445.83

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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.