Home / 8,151.39-12,211.55-4,643.81

Finding the Fourth Proportional to 8,151.39, 12,211.55 and 4,643.81

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Solution

The fourth proportional to 8,151.39, 12,211.55 and 4,643.81 is: 6,956.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.39 : 12,211.55 = 4,643.81 : x
  2. Step 2: Convert to fraction form
    8,151.39/12,211.55 = 4,643.81/x
  3. Step 3: Cross multiply
    8,151.39x = 12,211.55 × 4,643.81
  4. Step 4: Simplify right side
    8,151.39x = 56,708,033.73
  5. Step 5: Solve for x
    x = 56,708,033.73/8,151.39
  6. Step 6: Final answer
    x = 6,956.85

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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.