Home / 7,221.92-10,832.40-2,840.12

Finding the Fourth Proportional to 7,221.92, 10,832.40 and 2,840.12

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Solution

The fourth proportional to 7,221.92, 10,832.40 and 2,840.12 is: 4,259.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.92 : 10,832.40 = 2,840.12 : x
  2. Step 2: Convert to fraction form
    7,221.92/10,832.40 = 2,840.12/x
  3. Step 3: Cross multiply
    7,221.92x = 10,832.40 × 2,840.12
  4. Step 4: Simplify right side
    7,221.92x = 30,765,315.89
  5. Step 5: Solve for x
    x = 30,765,315.89/7,221.92
  6. Step 6: Final answer
    x = 4,259.99

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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.