Home / 5,112.60-7,653.62-3,131.99

Finding the Fourth Proportional to 5,112.60, 7,653.62 and 3,131.99

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Solution

The fourth proportional to 5,112.60, 7,653.62 and 3,131.99 is: 4,688.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.60 : 7,653.62 = 3,131.99 : x
  2. Step 2: Convert to fraction form
    5,112.60/7,653.62 = 3,131.99/x
  3. Step 3: Cross multiply
    5,112.60x = 7,653.62 × 3,131.99
  4. Step 4: Simplify right side
    5,112.60x = 23,971,061.30
  5. Step 5: Solve for x
    x = 23,971,061.30/5,112.60
  6. Step 6: Final answer
    x = 4,688.62

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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.