Home / 3,160.85-4,739.48-2,187.05

Finding the Fourth Proportional to 3,160.85, 4,739.48 and 2,187.05

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Solution

The fourth proportional to 3,160.85, 4,739.48 and 2,187.05 is: 3,279.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.85 : 4,739.48 = 2,187.05 : x
  2. Step 2: Convert to fraction form
    3,160.85/4,739.48 = 2,187.05/x
  3. Step 3: Cross multiply
    3,160.85x = 4,739.48 × 2,187.05
  4. Step 4: Simplify right side
    3,160.85x = 10,365,468.80
  5. Step 5: Solve for x
    x = 10,365,468.80/3,160.85
  6. Step 6: Final answer
    x = 3,279.33

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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.