Home / 3,611.28-5,424.20-2,153.28

Finding the Fourth Proportional to 3,611.28, 5,424.20 and 2,153.28

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Solution

The fourth proportional to 3,611.28, 5,424.20 and 2,153.28 is: 3,234.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.28 : 5,424.20 = 2,153.28 : x
  2. Step 2: Convert to fraction form
    3,611.28/5,424.20 = 2,153.28/x
  3. Step 3: Cross multiply
    3,611.28x = 5,424.20 × 2,153.28
  4. Step 4: Simplify right side
    3,611.28x = 11,679,821.38
  5. Step 5: Solve for x
    x = 11,679,821.38/3,611.28
  6. Step 6: Final answer
    x = 3,234.26

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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.