Home / 3,455.20-5,179.68-1,262.40

Finding the Fourth Proportional to 3,455.20, 5,179.68 and 1,262.40

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Solution

The fourth proportional to 3,455.20, 5,179.68 and 1,262.40 is: 1,892.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.20 : 5,179.68 = 1,262.40 : x
  2. Step 2: Convert to fraction form
    3,455.20/5,179.68 = 1,262.40/x
  3. Step 3: Cross multiply
    3,455.20x = 5,179.68 × 1,262.40
  4. Step 4: Simplify right side
    3,455.20x = 6,538,828.03
  5. Step 5: Solve for x
    x = 6,538,828.03/3,455.20
  6. Step 6: Final answer
    x = 1,892.46

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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.