Home / 8,742.58-13,102.18-3,190.71

Finding the Fourth Proportional to 8,742.58, 13,102.18 and 3,190.71

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Solution

The fourth proportional to 8,742.58, 13,102.18 and 3,190.71 is: 4,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.58 : 13,102.18 = 3,190.71 : x
  2. Step 2: Convert to fraction form
    8,742.58/13,102.18 = 3,190.71/x
  3. Step 3: Cross multiply
    8,742.58x = 13,102.18 × 3,190.71
  4. Step 4: Simplify right side
    8,742.58x = 41,805,256.75
  5. Step 5: Solve for x
    x = 41,805,256.75/8,742.58
  6. Step 6: Final answer
    x = 4,781.80

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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.