Home / 3,620.64-5,429.36-1,540.56

Finding the Fourth Proportional to 3,620.64, 5,429.36 and 1,540.56

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Solution

The fourth proportional to 3,620.64, 5,429.36 and 1,540.56 is: 2,310.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.64 : 5,429.36 = 1,540.56 : x
  2. Step 2: Convert to fraction form
    3,620.64/5,429.36 = 1,540.56/x
  3. Step 3: Cross multiply
    3,620.64x = 5,429.36 × 1,540.56
  4. Step 4: Simplify right side
    3,620.64x = 8,364,254.84
  5. Step 5: Solve for x
    x = 8,364,254.84/3,620.64
  6. Step 6: Final answer
    x = 2,310.16

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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.