Home / 5,205.79-7,175.55-3,211.98

Finding the Fourth Proportional to 5,205.79, 7,175.55 and 3,211.98

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Solution

The fourth proportional to 5,205.79, 7,175.55 and 3,211.98 is: 4,427.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.79 : 7,175.55 = 3,211.98 : x
  2. Step 2: Convert to fraction form
    5,205.79/7,175.55 = 3,211.98/x
  3. Step 3: Cross multiply
    5,205.79x = 7,175.55 × 3,211.98
  4. Step 4: Simplify right side
    5,205.79x = 23,047,723.09
  5. Step 5: Solve for x
    x = 23,047,723.09/5,205.79
  6. Step 6: Final answer
    x = 4,427.32

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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.