Home / 2,148.18-3,222.30-609.18

Finding the Fourth Proportional to 2,148.18, 3,222.30 and 609.18

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Solution

The fourth proportional to 2,148.18, 3,222.30 and 609.18 is: 913.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.18 : 3,222.30 = 609.18 : x
  2. Step 2: Convert to fraction form
    2,148.18/3,222.30 = 609.18/x
  3. Step 3: Cross multiply
    2,148.18x = 3,222.30 × 609.18
  4. Step 4: Simplify right side
    2,148.18x = 1,962,960.71
  5. Step 5: Solve for x
    x = 1,962,960.71/2,148.18
  6. Step 6: Final answer
    x = 913.78

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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.