Home / 3,985.56-5,491.33-2,972.99

Finding the Fourth Proportional to 3,985.56, 5,491.33 and 2,972.99

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Solution

The fourth proportional to 3,985.56, 5,491.33 and 2,972.99 is: 4,096.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.56 : 5,491.33 = 2,972.99 : x
  2. Step 2: Convert to fraction form
    3,985.56/5,491.33 = 2,972.99/x
  3. Step 3: Cross multiply
    3,985.56x = 5,491.33 × 2,972.99
  4. Step 4: Simplify right side
    3,985.56x = 16,325,675.47
  5. Step 5: Solve for x
    x = 16,325,675.47/3,985.56
  6. Step 6: Final answer
    x = 4,096.21

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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.