Home / 5,287.71-7,907.28-3,886.44

Finding the Fourth Proportional to 5,287.71, 7,907.28 and 3,886.44

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Solution

The fourth proportional to 5,287.71, 7,907.28 and 3,886.44 is: 5,811.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.71 : 7,907.28 = 3,886.44 : x
  2. Step 2: Convert to fraction form
    5,287.71/7,907.28 = 3,886.44/x
  3. Step 3: Cross multiply
    5,287.71x = 7,907.28 × 3,886.44
  4. Step 4: Simplify right side
    5,287.71x = 30,731,169.28
  5. Step 5: Solve for x
    x = 30,731,169.28/5,287.71
  6. Step 6: Final answer
    x = 5,811.81

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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.