Home / 5,222.78-7,209.70-3,126.50

Finding the Fourth Proportional to 5,222.78, 7,209.70 and 3,126.50

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Solution

The fourth proportional to 5,222.78, 7,209.70 and 3,126.50 is: 4,315.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,222.78 : 7,209.70 = 3,126.50 : x
  2. Step 2: Convert to fraction form
    5,222.78/7,209.70 = 3,126.50/x
  3. Step 3: Cross multiply
    5,222.78x = 7,209.70 × 3,126.50
  4. Step 4: Simplify right side
    5,222.78x = 22,541,127.05
  5. Step 5: Solve for x
    x = 22,541,127.05/5,222.78
  6. Step 6: Final answer
    x = 4,315.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.