Home / 8,271.18-12,398.76-2,720.70

Finding the Fourth Proportional to 8,271.18, 12,398.76 and 2,720.70

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Solution

The fourth proportional to 8,271.18, 12,398.76 and 2,720.70 is: 4,078.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271.18 : 12,398.76 = 2,720.70 : x
  2. Step 2: Convert to fraction form
    8,271.18/12,398.76 = 2,720.70/x
  3. Step 3: Cross multiply
    8,271.18x = 12,398.76 × 2,720.70
  4. Step 4: Simplify right side
    8,271.18x = 33,733,306.33
  5. Step 5: Solve for x
    x = 33,733,306.33/8,271.18
  6. Step 6: Final answer
    x = 4,078.42

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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.