Home / 3,403.68-5,076.30-3,120.72

Finding the Fourth Proportional to 3,403.68, 5,076.30 and 3,120.72

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Solution

The fourth proportional to 3,403.68, 5,076.30 and 3,120.72 is: 4,654.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.68 : 5,076.30 = 3,120.72 : x
  2. Step 2: Convert to fraction form
    3,403.68/5,076.30 = 3,120.72/x
  3. Step 3: Cross multiply
    3,403.68x = 5,076.30 × 3,120.72
  4. Step 4: Simplify right side
    3,403.68x = 15,841,710.94
  5. Step 5: Solve for x
    x = 15,841,710.94/3,403.68
  6. Step 6: Final answer
    x = 4,654.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.