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Finding the Fourth Proportional to 2,814.40, 4,214.40 and 2,238.40

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Solution

The fourth proportional to 2,814.40, 4,214.40 and 2,238.40 is: 3,351.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.40 : 4,214.40 = 2,238.40 : x
  2. Step 2: Convert to fraction form
    2,814.40/4,214.40 = 2,238.40/x
  3. Step 3: Cross multiply
    2,814.40x = 4,214.40 × 2,238.40
  4. Step 4: Simplify right side
    2,814.40x = 9,433,512.96
  5. Step 5: Solve for x
    x = 9,433,512.96/2,814.40
  6. Step 6: Final answer
    x = 3,351.87

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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.