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Finding the Fourth Proportional to 2,145.38, 3,218.63 and 606.38

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Solution

The fourth proportional to 2,145.38, 3,218.63 and 606.38 is: 909.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.38 : 3,218.63 = 606.38 : x
  2. Step 2: Convert to fraction form
    2,145.38/3,218.63 = 606.38/x
  3. Step 3: Cross multiply
    2,145.38x = 3,218.63 × 606.38
  4. Step 4: Simplify right side
    2,145.38x = 1,951,693.73
  5. Step 5: Solve for x
    x = 1,951,693.73/2,145.38
  6. Step 6: Final answer
    x = 909.72

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1.5x scale

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.