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Finding the Fourth Proportional to 7,008.70, 10,511.54 and 2,847.64

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Solution

The fourth proportional to 7,008.70, 10,511.54 and 2,847.64 is: 4,270.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,008.70 : 10,511.54 = 2,847.64 : x
  2. Step 2: Convert to fraction form
    7,008.70/10,511.54 = 2,847.64/x
  3. Step 3: Cross multiply
    7,008.70x = 10,511.54 × 2,847.64
  4. Step 4: Simplify right side
    7,008.70x = 29,933,081.77
  5. Step 5: Solve for x
    x = 29,933,081.77/7,008.70
  6. Step 6: Final answer
    x = 4,270.85

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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.