Home / 5,441.85-8,157.87-1,978.29

Finding the Fourth Proportional to 5,441.85, 8,157.87 and 1,978.29

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Solution

The fourth proportional to 5,441.85, 8,157.87 and 1,978.29 is: 2,965.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,441.85 : 8,157.87 = 1,978.29 : x
  2. Step 2: Convert to fraction form
    5,441.85/8,157.87 = 1,978.29/x
  3. Step 3: Cross multiply
    5,441.85x = 8,157.87 × 1,978.29
  4. Step 4: Simplify right side
    5,441.85x = 16,138,632.64
  5. Step 5: Solve for x
    x = 16,138,632.64/5,441.85
  6. Step 6: Final answer
    x = 2,965.65

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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.