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Finding the Fourth Proportional to 3,412.86, 4,711.23 and 2,170.86

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Solution

The fourth proportional to 3,412.86, 4,711.23 and 2,170.86 is: 2,996.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.86 : 4,711.23 = 2,170.86 : x
  2. Step 2: Convert to fraction form
    3,412.86/4,711.23 = 2,170.86/x
  3. Step 3: Cross multiply
    3,412.86x = 4,711.23 × 2,170.86
  4. Step 4: Simplify right side
    3,412.86x = 10,227,420.76
  5. Step 5: Solve for x
    x = 10,227,420.76/3,412.86
  6. Step 6: Final answer
    x = 2,996.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.