Home / 8,078.60-12,117.54-2,531.06

Finding the Fourth Proportional to 8,078.60, 12,117.54 and 2,531.06

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Solution

The fourth proportional to 8,078.60, 12,117.54 and 2,531.06 is: 3,796.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.60 : 12,117.54 = 2,531.06 : x
  2. Step 2: Convert to fraction form
    8,078.60/12,117.54 = 2,531.06/x
  3. Step 3: Cross multiply
    8,078.60x = 12,117.54 × 2,531.06
  4. Step 4: Simplify right side
    8,078.60x = 30,670,220.79
  5. Step 5: Solve for x
    x = 30,670,220.79/8,078.60
  6. Step 6: Final answer
    x = 3,796.48

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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.