Home / 8,521.39-12,780.60-2,281.96

Finding the Fourth Proportional to 8,521.39, 12,780.60 and 2,281.96

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Solution

The fourth proportional to 8,521.39, 12,780.60 and 2,281.96 is: 3,422.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.39 : 12,780.60 = 2,281.96 : x
  2. Step 2: Convert to fraction form
    8,521.39/12,780.60 = 2,281.96/x
  3. Step 3: Cross multiply
    8,521.39x = 12,780.60 × 2,281.96
  4. Step 4: Simplify right side
    8,521.39x = 29,164,817.98
  5. Step 5: Solve for x
    x = 29,164,817.98/8,521.39
  6. Step 6: Final answer
    x = 3,422.54

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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.