Home / 3,390.88-5,080.76-2,088.64

Finding the Fourth Proportional to 3,390.88, 5,080.76 and 2,088.64

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Solution

The fourth proportional to 3,390.88, 5,080.76 and 2,088.64 is: 3,129.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.88 : 5,080.76 = 2,088.64 : x
  2. Step 2: Convert to fraction form
    3,390.88/5,080.76 = 2,088.64/x
  3. Step 3: Cross multiply
    3,390.88x = 5,080.76 × 2,088.64
  4. Step 4: Simplify right side
    3,390.88x = 10,611,878.57
  5. Step 5: Solve for x
    x = 10,611,878.57/3,390.88
  6. Step 6: Final answer
    x = 3,129.54

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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.