Home / 5,169.28-7,129.20-3,490.24

Finding the Fourth Proportional to 5,169.28, 7,129.20 and 3,490.24

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Solution

The fourth proportional to 5,169.28, 7,129.20 and 3,490.24 is: 4,813.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.28 : 7,129.20 = 3,490.24 : x
  2. Step 2: Convert to fraction form
    5,169.28/7,129.20 = 3,490.24/x
  3. Step 3: Cross multiply
    5,169.28x = 7,129.20 × 3,490.24
  4. Step 4: Simplify right side
    5,169.28x = 24,882,619.01
  5. Step 5: Solve for x
    x = 24,882,619.01/5,169.28
  6. Step 6: Final answer
    x = 4,813.56

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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.