Home / 5,206.88-7,810.32-2,128.88

Finding the Fourth Proportional to 5,206.88, 7,810.32 and 2,128.88

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Solution

The fourth proportional to 5,206.88, 7,810.32 and 2,128.88 is: 3,193.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,206.88 : 7,810.32 = 2,128.88 : x
  2. Step 2: Convert to fraction form
    5,206.88/7,810.32 = 2,128.88/x
  3. Step 3: Cross multiply
    5,206.88x = 7,810.32 × 2,128.88
  4. Step 4: Simplify right side
    5,206.88x = 16,627,194.99
  5. Step 5: Solve for x
    x = 16,627,194.99/5,206.88
  6. Step 6: Final answer
    x = 3,193.32

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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.