Home / 2,991.54-4,481.91-2,331.12

Finding the Fourth Proportional to 2,991.54, 4,481.91 and 2,331.12

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Solution

The fourth proportional to 2,991.54, 4,481.91 and 2,331.12 is: 3,492.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.54 : 4,481.91 = 2,331.12 : x
  2. Step 2: Convert to fraction form
    2,991.54/4,481.91 = 2,331.12/x
  3. Step 3: Cross multiply
    2,991.54x = 4,481.91 × 2,331.12
  4. Step 4: Simplify right side
    2,991.54x = 10,447,870.04
  5. Step 5: Solve for x
    x = 10,447,870.04/2,991.54
  6. Step 6: Final answer
    x = 3,492.47

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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.