Home / 5,139.82-7,704.86-2,220.17

Finding the Fourth Proportional to 5,139.82, 7,704.86 and 2,220.17

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Solution

The fourth proportional to 5,139.82, 7,704.86 and 2,220.17 is: 3,328.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.82 : 7,704.86 = 2,220.17 : x
  2. Step 2: Convert to fraction form
    5,139.82/7,704.86 = 2,220.17/x
  3. Step 3: Cross multiply
    5,139.82x = 7,704.86 × 2,220.17
  4. Step 4: Simplify right side
    5,139.82x = 17,106,099.03
  5. Step 5: Solve for x
    x = 17,106,099.03/5,139.82
  6. Step 6: Final answer
    x = 3,328.15

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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.