Home / 5,208.75-7,814.21-2,130.75

Finding the Fourth Proportional to 5,208.75, 7,814.21 and 2,130.75

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Solution

The fourth proportional to 5,208.75, 7,814.21 and 2,130.75 is: 3,196.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.75 : 7,814.21 = 2,130.75 : x
  2. Step 2: Convert to fraction form
    5,208.75/7,814.21 = 2,130.75/x
  3. Step 3: Cross multiply
    5,208.75x = 7,814.21 × 2,130.75
  4. Step 4: Simplify right side
    5,208.75x = 16,650,117.30
  5. Step 5: Solve for x
    x = 16,650,117.30/5,208.75
  6. Step 6: Final answer
    x = 3,196.57

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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.