Home / 8,211.17-12,306.74-3,208.88

Finding the Fourth Proportional to 8,211.17, 12,306.74 and 3,208.88

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Solution

The fourth proportional to 8,211.17, 12,306.74 and 3,208.88 is: 4,809.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.17 : 12,306.74 = 3,208.88 : x
  2. Step 2: Convert to fraction form
    8,211.17/12,306.74 = 3,208.88/x
  3. Step 3: Cross multiply
    8,211.17x = 12,306.74 × 3,208.88
  4. Step 4: Simplify right side
    8,211.17x = 39,490,866.57
  5. Step 5: Solve for x
    x = 39,490,866.57/8,211.17
  6. Step 6: Final answer
    x = 4,809.41

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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.