Home / 7,961.20-11,919.90-4,057.84

Finding the Fourth Proportional to 7,961.20, 11,919.90 and 4,057.84

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Solution

The fourth proportional to 7,961.20, 11,919.90 and 4,057.84 is: 6,075.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.20 : 11,919.90 = 4,057.84 : x
  2. Step 2: Convert to fraction form
    7,961.20/11,919.90 = 4,057.84/x
  3. Step 3: Cross multiply
    7,961.20x = 11,919.90 × 4,057.84
  4. Step 4: Simplify right side
    7,961.20x = 48,369,047.02
  5. Step 5: Solve for x
    x = 48,369,047.02/7,961.20
  6. Step 6: Final answer
    x = 6,075.60

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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.