Home / 7,640.26-11,439.56-5,785.78

Finding the Fourth Proportional to 7,640.26, 11,439.56 and 5,785.78

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Solution

The fourth proportional to 7,640.26, 11,439.56 and 5,785.78 is: 8,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.26 : 11,439.56 = 5,785.78 : x
  2. Step 2: Convert to fraction form
    7,640.26/11,439.56 = 5,785.78/x
  3. Step 3: Cross multiply
    7,640.26x = 11,439.56 × 5,785.78
  4. Step 4: Simplify right side
    7,640.26x = 66,186,777.46
  5. Step 5: Solve for x
    x = 66,186,777.46/7,640.26
  6. Step 6: Final answer
    x = 8,662.90

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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.