Home / 8,078.56-12,117.74-2,531.95

Finding the Fourth Proportional to 8,078.56, 12,117.74 and 2,531.95

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Solution

The fourth proportional to 8,078.56, 12,117.74 and 2,531.95 is: 3,797.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.56 : 12,117.74 = 2,531.95 : x
  2. Step 2: Convert to fraction form
    8,078.56/12,117.74 = 2,531.95/x
  3. Step 3: Cross multiply
    8,078.56x = 12,117.74 × 2,531.95
  4. Step 4: Simplify right side
    8,078.56x = 30,681,468.84
  5. Step 5: Solve for x
    x = 30,681,468.84/8,078.56
  6. Step 6: Final answer
    x = 3,797.89

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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.