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Finding the Fourth Proportional to 3,191.86, 4,789.68 and 1,730.98

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Solution

The fourth proportional to 3,191.86, 4,789.68 and 1,730.98 is: 2,597.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.86 : 4,789.68 = 1,730.98 : x
  2. Step 2: Convert to fraction form
    3,191.86/4,789.68 = 1,730.98/x
  3. Step 3: Cross multiply
    3,191.86x = 4,789.68 × 1,730.98
  4. Step 4: Simplify right side
    3,191.86x = 8,290,840.29
  5. Step 5: Solve for x
    x = 8,290,840.29/3,191.86
  6. Step 6: Final answer
    x = 2,597.49

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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.