Home / 3,086.76-4,253.54-2,620.20

Finding the Fourth Proportional to 3,086.76, 4,253.54 and 2,620.20

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Solution

The fourth proportional to 3,086.76, 4,253.54 and 2,620.20 is: 3,610.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.76 : 4,253.54 = 2,620.20 : x
  2. Step 2: Convert to fraction form
    3,086.76/4,253.54 = 2,620.20/x
  3. Step 3: Cross multiply
    3,086.76x = 4,253.54 × 2,620.20
  4. Step 4: Simplify right side
    3,086.76x = 11,145,125.51
  5. Step 5: Solve for x
    x = 11,145,125.51/3,086.76
  6. Step 6: Final answer
    x = 3,610.62

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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.