Home / 7,181.85-9,909.35-4,156.50

Finding the Fourth Proportional to 7,181.85, 9,909.35 and 4,156.50

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Solution

The fourth proportional to 7,181.85, 9,909.35 and 4,156.50 is: 5,735.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.85 : 9,909.35 = 4,156.50 : x
  2. Step 2: Convert to fraction form
    7,181.85/9,909.35 = 4,156.50/x
  3. Step 3: Cross multiply
    7,181.85x = 9,909.35 × 4,156.50
  4. Step 4: Simplify right side
    7,181.85x = 41,188,245.24
  5. Step 5: Solve for x
    x = 41,188,245.24/7,181.85
  6. Step 6: Final answer
    x = 5,735.04

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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.