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Finding the Fourth Proportional to 7,108.76, 10,664.76 and 2,179.10

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Solution

The fourth proportional to 7,108.76, 10,664.76 and 2,179.10 is: 3,269.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108.76 : 10,664.76 = 2,179.10 : x
  2. Step 2: Convert to fraction form
    7,108.76/10,664.76 = 2,179.10/x
  3. Step 3: Cross multiply
    7,108.76x = 10,664.76 × 2,179.10
  4. Step 4: Simplify right side
    7,108.76x = 23,239,578.52
  5. Step 5: Solve for x
    x = 23,239,578.52/7,108.76
  6. Step 6: Final answer
    x = 3,269.15

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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.