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Finding the Fourth Proportional to 7,221, 10,826.64 and 3,323.28

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Solution

The fourth proportional to 7,221, 10,826.64 and 3,323.28 is: 4,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221 : 10,826.64 = 3,323.28 : x
  2. Step 2: Convert to fraction form
    7,221/10,826.64 = 3,323.28/x
  3. Step 3: Cross multiply
    7,221x = 10,826.64 × 3,323.28
  4. Step 4: Simplify right side
    7,221x = 35,979,956.18
  5. Step 5: Solve for x
    x = 35,979,956.18/7,221
  6. Step 6: Final answer
    x = 4,982.68

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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.