Home / 7,639.26-11,438.06-5,784.78

Finding the Fourth Proportional to 7,639.26, 11,438.06 and 5,784.78

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Solution

The fourth proportional to 7,639.26, 11,438.06 and 5,784.78 is: 8,661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.26 : 11,438.06 = 5,784.78 : x
  2. Step 2: Convert to fraction form
    7,639.26/11,438.06 = 5,784.78/x
  3. Step 3: Cross multiply
    7,639.26x = 11,438.06 × 5,784.78
  4. Step 4: Simplify right side
    7,639.26x = 66,166,660.73
  5. Step 5: Solve for x
    x = 66,166,660.73/7,639.26
  6. Step 6: Final answer
    x = 8,661.40

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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.