Home / 8,143.29-12,217.10-3,211.74

Finding the Fourth Proportional to 8,143.29, 12,217.10 and 3,211.74

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Solution

The fourth proportional to 8,143.29, 12,217.10 and 3,211.74 is: 4,818.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.29 : 12,217.10 = 3,211.74 : x
  2. Step 2: Convert to fraction form
    8,143.29/12,217.10 = 3,211.74/x
  3. Step 3: Cross multiply
    8,143.29x = 12,217.10 × 3,211.74
  4. Step 4: Simplify right side
    8,143.29x = 39,238,132.70
  5. Step 5: Solve for x
    x = 39,238,132.70/8,143.29
  6. Step 6: Final answer
    x = 4,818.46

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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.