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Finding the Fourth Proportional to 11,270.10, 16,905.15 and 3,479.70

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Solution

The fourth proportional to 11,270.10, 16,905.15 and 3,479.70 is: 5,219.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,270.10 : 16,905.15 = 3,479.70 : x
  2. Step 2: Convert to fraction form
    11,270.10/16,905.15 = 3,479.70/x
  3. Step 3: Cross multiply
    11,270.10x = 16,905.15 × 3,479.70
  4. Step 4: Simplify right side
    11,270.10x = 58,824,850.46
  5. Step 5: Solve for x
    x = 58,824,850.46/11,270.10
  6. Step 6: Final answer
    x = 5,219.55

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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.