Home / 5,431.58-8,141.82-2,140.14

Finding the Fourth Proportional to 5,431.58, 8,141.82 and 2,140.14

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Solution

The fourth proportional to 5,431.58, 8,141.82 and 2,140.14 is: 3,208.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.58 : 8,141.82 = 2,140.14 : x
  2. Step 2: Convert to fraction form
    5,431.58/8,141.82 = 2,140.14/x
  3. Step 3: Cross multiply
    5,431.58x = 8,141.82 × 2,140.14
  4. Step 4: Simplify right side
    5,431.58x = 17,424,634.65
  5. Step 5: Solve for x
    x = 17,424,634.65/5,431.58
  6. Step 6: Final answer
    x = 3,208.02

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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.