Home / 8,078.34-12,117.49-2,531.71

Finding the Fourth Proportional to 8,078.34, 12,117.49 and 2,531.71

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Solution

The fourth proportional to 8,078.34, 12,117.49 and 2,531.71 is: 3,797.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.34 : 12,117.49 = 2,531.71 : x
  2. Step 2: Convert to fraction form
    8,078.34/12,117.49 = 2,531.71/x
  3. Step 3: Cross multiply
    8,078.34x = 12,117.49 × 2,531.71
  4. Step 4: Simplify right side
    8,078.34x = 30,677,897.36
  5. Step 5: Solve for x
    x = 30,677,897.36/8,078.34
  6. Step 6: Final answer
    x = 3,797.55

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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.