Home / 5,441.12-8,162.90-1,978.38

Finding the Fourth Proportional to 5,441.12, 8,162.90 and 1,978.38

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Solution

The fourth proportional to 5,441.12, 8,162.90 and 1,978.38 is: 2,968.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,441.12 : 8,162.90 = 1,978.38 : x
  2. Step 2: Convert to fraction form
    5,441.12/8,162.90 = 1,978.38/x
  3. Step 3: Cross multiply
    5,441.12x = 8,162.90 × 1,978.38
  4. Step 4: Simplify right side
    5,441.12x = 16,149,318.10
  5. Step 5: Solve for x
    x = 16,149,318.10/5,441.12
  6. Step 6: Final answer
    x = 2,968.01

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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.