Home / 8,619.14-12,928.76-3,425.02

Finding the Fourth Proportional to 8,619.14, 12,928.76 and 3,425.02

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Solution

The fourth proportional to 8,619.14, 12,928.76 and 3,425.02 is: 5,137.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.14 : 12,928.76 = 3,425.02 : x
  2. Step 2: Convert to fraction form
    8,619.14/12,928.76 = 3,425.02/x
  3. Step 3: Cross multiply
    8,619.14x = 12,928.76 × 3,425.02
  4. Step 4: Simplify right side
    8,619.14x = 44,281,261.58
  5. Step 5: Solve for x
    x = 44,281,261.58/8,619.14
  6. Step 6: Final answer
    x = 5,137.55

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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.