Home / 2,814.40-4,221.66-734.28

Finding the Fourth Proportional to 2,814.40, 4,221.66 and 734.28

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Solution

The fourth proportional to 2,814.40, 4,221.66 and 734.28 is: 1,101.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.40 : 4,221.66 = 734.28 : x
  2. Step 2: Convert to fraction form
    2,814.40/4,221.66 = 734.28/x
  3. Step 3: Cross multiply
    2,814.40x = 4,221.66 × 734.28
  4. Step 4: Simplify right side
    2,814.40x = 3,099,880.50
  5. Step 5: Solve for x
    x = 3,099,880.50/2,814.40
  6. Step 6: Final answer
    x = 1,101.44

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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.