Home / 5,231.68-7,218.72-3,135.04

Finding the Fourth Proportional to 5,231.68, 7,218.72 and 3,135.04

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Solution

The fourth proportional to 5,231.68, 7,218.72 and 3,135.04 is: 4,325.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.68 : 7,218.72 = 3,135.04 : x
  2. Step 2: Convert to fraction form
    5,231.68/7,218.72 = 3,135.04/x
  3. Step 3: Cross multiply
    5,231.68x = 7,218.72 × 3,135.04
  4. Step 4: Simplify right side
    5,231.68x = 22,630,975.95
  5. Step 5: Solve for x
    x = 22,630,975.95/5,231.68
  6. Step 6: Final answer
    x = 4,325.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.