Home / 7,758.42-11,639.46-2,211.84

Finding the Fourth Proportional to 7,758.42, 11,639.46 and 2,211.84

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Solution

The fourth proportional to 7,758.42, 11,639.46 and 2,211.84 is: 3,318.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,758.42 : 11,639.46 = 2,211.84 : x
  2. Step 2: Convert to fraction form
    7,758.42/11,639.46 = 2,211.84/x
  3. Step 3: Cross multiply
    7,758.42x = 11,639.46 × 2,211.84
  4. Step 4: Simplify right side
    7,758.42x = 25,744,631.50
  5. Step 5: Solve for x
    x = 25,744,631.50/7,758.42
  6. Step 6: Final answer
    x = 3,318.28

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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.