Home / 2,148.28-3,222.39-609.28

Finding the Fourth Proportional to 2,148.28, 3,222.39 and 609.28

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Solution

The fourth proportional to 2,148.28, 3,222.39 and 609.28 is: 913.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.28 : 3,222.39 = 609.28 : x
  2. Step 2: Convert to fraction form
    2,148.28/3,222.39 = 609.28/x
  3. Step 3: Cross multiply
    2,148.28x = 3,222.39 × 609.28
  4. Step 4: Simplify right side
    2,148.28x = 1,963,337.78
  5. Step 5: Solve for x
    x = 1,963,337.78/2,148.28
  6. Step 6: Final answer
    x = 913.91

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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.