Home / 5,128.30-7,688.40-2,204.20

Finding the Fourth Proportional to 5,128.30, 7,688.40 and 2,204.20

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Solution

The fourth proportional to 5,128.30, 7,688.40 and 2,204.20 is: 3,304.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.30 : 7,688.40 = 2,204.20 : x
  2. Step 2: Convert to fraction form
    5,128.30/7,688.40 = 2,204.20/x
  3. Step 3: Cross multiply
    5,128.30x = 7,688.40 × 2,204.20
  4. Step 4: Simplify right side
    5,128.30x = 16,946,771.28
  5. Step 5: Solve for x
    x = 16,946,771.28/5,128.30
  6. Step 6: Final answer
    x = 3,304.56

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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.