Home / 5,318.75-7,975.05-1,619.87

Finding the Fourth Proportional to 5,318.75, 7,975.05 and 1,619.87

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Solution

The fourth proportional to 5,318.75, 7,975.05 and 1,619.87 is: 2,428.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.75 : 7,975.05 = 1,619.87 : x
  2. Step 2: Convert to fraction form
    5,318.75/7,975.05 = 1,619.87/x
  3. Step 3: Cross multiply
    5,318.75x = 7,975.05 × 1,619.87
  4. Step 4: Simplify right side
    5,318.75x = 12,918,544.24
  5. Step 5: Solve for x
    x = 12,918,544.24/5,318.75
  6. Step 6: Final answer
    x = 2,428.87

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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.