Home / 7,772.12-11,639.61-4,256.85

Finding the Fourth Proportional to 7,772.12, 11,639.61 and 4,256.85

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Solution

The fourth proportional to 7,772.12, 11,639.61 and 4,256.85 is: 6,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.12 : 11,639.61 = 4,256.85 : x
  2. Step 2: Convert to fraction form
    7,772.12/11,639.61 = 4,256.85/x
  3. Step 3: Cross multiply
    7,772.12x = 11,639.61 × 4,256.85
  4. Step 4: Simplify right side
    7,772.12x = 49,548,073.83
  5. Step 5: Solve for x
    x = 49,548,073.83/7,772.12
  6. Step 6: Final answer
    x = 6,375.11

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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.