Home / 3,191.64-4,789.30-1,342.58

Finding the Fourth Proportional to 3,191.64, 4,789.30 and 1,342.58

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Solution

The fourth proportional to 3,191.64, 4,789.30 and 1,342.58 is: 2,014.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.64 : 4,789.30 = 1,342.58 : x
  2. Step 2: Convert to fraction form
    3,191.64/4,789.30 = 1,342.58/x
  3. Step 3: Cross multiply
    3,191.64x = 4,789.30 × 1,342.58
  4. Step 4: Simplify right side
    3,191.64x = 6,430,018.39
  5. Step 5: Solve for x
    x = 6,430,018.39/3,191.64
  6. Step 6: Final answer
    x = 2,014.64

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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.