Home / 2,829.40-3,905.76-2,200.12

Finding the Fourth Proportional to 2,829.40, 3,905.76 and 2,200.12

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Solution

The fourth proportional to 2,829.40, 3,905.76 and 2,200.12 is: 3,037.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.40 : 3,905.76 = 2,200.12 : x
  2. Step 2: Convert to fraction form
    2,829.40/3,905.76 = 2,200.12/x
  3. Step 3: Cross multiply
    2,829.40x = 3,905.76 × 2,200.12
  4. Step 4: Simplify right side
    2,829.40x = 8,593,140.69
  5. Step 5: Solve for x
    x = 8,593,140.69/2,829.40
  6. Step 6: Final answer
    x = 3,037.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.