Home / 5,208.68-7,812.98-2,128.52

Finding the Fourth Proportional to 5,208.68, 7,812.98 and 2,128.52

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Solution

The fourth proportional to 5,208.68, 7,812.98 and 2,128.52 is: 3,192.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.68 : 7,812.98 = 2,128.52 : x
  2. Step 2: Convert to fraction form
    5,208.68/7,812.98 = 2,128.52/x
  3. Step 3: Cross multiply
    5,208.68x = 7,812.98 × 2,128.52
  4. Step 4: Simplify right side
    5,208.68x = 16,630,084.19
  5. Step 5: Solve for x
    x = 16,630,084.19/5,208.68
  6. Step 6: Final answer
    x = 3,192.76

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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.