Home / 4,991.20-7,492.20-3,144.40

Finding the Fourth Proportional to 4,991.20, 7,492.20 and 3,144.40

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Solution

The fourth proportional to 4,991.20, 7,492.20 and 3,144.40 is: 4,720.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.20 : 7,492.20 = 3,144.40 : x
  2. Step 2: Convert to fraction form
    4,991.20/7,492.20 = 3,144.40/x
  3. Step 3: Cross multiply
    4,991.20x = 7,492.20 × 3,144.40
  4. Step 4: Simplify right side
    4,991.20x = 23,558,473.68
  5. Step 5: Solve for x
    x = 23,558,473.68/4,991.20
  6. Step 6: Final answer
    x = 4,720.00

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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.