Home / 8,078.58-12,117.96-2,531.70

Finding the Fourth Proportional to 8,078.58, 12,117.96 and 2,531.70

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Solution

The fourth proportional to 8,078.58, 12,117.96 and 2,531.70 is: 3,797.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.58 : 12,117.96 = 2,531.70 : x
  2. Step 2: Convert to fraction form
    8,078.58/12,117.96 = 2,531.70/x
  3. Step 3: Cross multiply
    8,078.58x = 12,117.96 × 2,531.70
  4. Step 4: Simplify right side
    8,078.58x = 30,679,039.33
  5. Step 5: Solve for x
    x = 30,679,039.33/8,078.58
  6. Step 6: Final answer
    x = 3,797.58

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1.5x scale

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.