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Finding the Fourth Proportional to 7,200.08, 10,800.12 and 2,005.94

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Solution

The fourth proportional to 7,200.08, 10,800.12 and 2,005.94 is: 3,008.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.08 : 10,800.12 = 2,005.94 : x
  2. Step 2: Convert to fraction form
    7,200.08/10,800.12 = 2,005.94/x
  3. Step 3: Cross multiply
    7,200.08x = 10,800.12 × 2,005.94
  4. Step 4: Simplify right side
    7,200.08x = 21,664,392.71
  5. Step 5: Solve for x
    x = 21,664,392.71/7,200.08
  6. Step 6: Final answer
    x = 3,008.91

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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.