Home / 3,358.40-5,037.60-2,127.20

Finding the Fourth Proportional to 3,358.40, 5,037.60 and 2,127.20

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Solution

The fourth proportional to 3,358.40, 5,037.60 and 2,127.20 is: 3,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,358.40 : 5,037.60 = 2,127.20 : x
  2. Step 2: Convert to fraction form
    3,358.40/5,037.60 = 2,127.20/x
  3. Step 3: Cross multiply
    3,358.40x = 5,037.60 × 2,127.20
  4. Step 4: Simplify right side
    3,358.40x = 10,715,982.72
  5. Step 5: Solve for x
    x = 10,715,982.72/3,358.40
  6. Step 6: Final answer
    x = 3,190.80

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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.