Home / 8,739.60-13,112.10-3,191.46

Finding the Fourth Proportional to 8,739.60, 13,112.10 and 3,191.46

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Solution

The fourth proportional to 8,739.60, 13,112.10 and 3,191.46 is: 4,788.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.60 : 13,112.10 = 3,191.46 : x
  2. Step 2: Convert to fraction form
    8,739.60/13,112.10 = 3,191.46/x
  3. Step 3: Cross multiply
    8,739.60x = 13,112.10 × 3,191.46
  4. Step 4: Simplify right side
    8,739.60x = 41,846,742.67
  5. Step 5: Solve for x
    x = 41,846,742.67/8,739.60
  6. Step 6: Final answer
    x = 4,788.18

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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.