Home / 3,438.44-5,154.78-1,387.88

Finding the Fourth Proportional to 3,438.44, 5,154.78 and 1,387.88

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Solution

The fourth proportional to 3,438.44, 5,154.78 and 1,387.88 is: 2,080.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.44 : 5,154.78 = 1,387.88 : x
  2. Step 2: Convert to fraction form
    3,438.44/5,154.78 = 1,387.88/x
  3. Step 3: Cross multiply
    3,438.44x = 5,154.78 × 1,387.88
  4. Step 4: Simplify right side
    3,438.44x = 7,154,216.07
  5. Step 5: Solve for x
    x = 7,154,216.07/3,438.44
  6. Step 6: Final answer
    x = 2,080.66

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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.