Home / 8,141.60-12,216.45-3,211.40

Finding the Fourth Proportional to 8,141.60, 12,216.45 and 3,211.40

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Solution

The fourth proportional to 8,141.60, 12,216.45 and 3,211.40 is: 4,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,141.60 : 12,216.45 = 3,211.40 : x
  2. Step 2: Convert to fraction form
    8,141.60/12,216.45 = 3,211.40/x
  3. Step 3: Cross multiply
    8,141.60x = 12,216.45 × 3,211.40
  4. Step 4: Simplify right side
    8,141.60x = 39,231,907.53
  5. Step 5: Solve for x
    x = 39,231,907.53/8,141.60
  6. Step 6: Final answer
    x = 4,818.70

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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.