Home / 5,190.92-7,160.85-3,421.88

Finding the Fourth Proportional to 5,190.92, 7,160.85 and 3,421.88

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Solution

The fourth proportional to 5,190.92, 7,160.85 and 3,421.88 is: 4,720.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.92 : 7,160.85 = 3,421.88 : x
  2. Step 2: Convert to fraction form
    5,190.92/7,160.85 = 3,421.88/x
  3. Step 3: Cross multiply
    5,190.92x = 7,160.85 × 3,421.88
  4. Step 4: Simplify right side
    5,190.92x = 24,503,569.40
  5. Step 5: Solve for x
    x = 24,503,569.40/5,190.92
  6. Step 6: Final answer
    x = 4,720.47

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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.