Home / 8,306.80-12,461.40-2,759.20

Finding the Fourth Proportional to 8,306.80, 12,461.40 and 2,759.20

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Solution

The fourth proportional to 8,306.80, 12,461.40 and 2,759.20 is: 4,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,306.80 : 12,461.40 = 2,759.20 : x
  2. Step 2: Convert to fraction form
    8,306.80/12,461.40 = 2,759.20/x
  3. Step 3: Cross multiply
    8,306.80x = 12,461.40 × 2,759.20
  4. Step 4: Simplify right side
    8,306.80x = 34,383,494.88
  5. Step 5: Solve for x
    x = 34,383,494.88/8,306.80
  6. Step 6: Final answer
    x = 4,139.20

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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.