Home / 5,160.80-7,119.24-3,269.20

Finding the Fourth Proportional to 5,160.80, 7,119.24 and 3,269.20

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Solution

The fourth proportional to 5,160.80, 7,119.24 and 3,269.20 is: 4,509.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.80 : 7,119.24 = 3,269.20 : x
  2. Step 2: Convert to fraction form
    5,160.80/7,119.24 = 3,269.20/x
  3. Step 3: Cross multiply
    5,160.80x = 7,119.24 × 3,269.20
  4. Step 4: Simplify right side
    5,160.80x = 23,274,219.41
  5. Step 5: Solve for x
    x = 23,274,219.41/5,160.80
  6. Step 6: Final answer
    x = 4,509.81

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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.