Home / 5,451.76-8,170.44-1,985.68

Finding the Fourth Proportional to 5,451.76, 8,170.44 and 1,985.68

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Solution

The fourth proportional to 5,451.76, 8,170.44 and 1,985.68 is: 2,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.76 : 8,170.44 = 1,985.68 : x
  2. Step 2: Convert to fraction form
    5,451.76/8,170.44 = 1,985.68/x
  3. Step 3: Cross multiply
    5,451.76x = 8,170.44 × 1,985.68
  4. Step 4: Simplify right side
    5,451.76x = 16,223,879.30
  5. Step 5: Solve for x
    x = 16,223,879.30/5,451.76
  6. Step 6: Final answer
    x = 2,975.90

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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.