Home / 6,945.90-9,585.25-3,961.78

Finding the Fourth Proportional to 6,945.90, 9,585.25 and 3,961.78

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Solution

The fourth proportional to 6,945.90, 9,585.25 and 3,961.78 is: 5,467.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,945.90 : 9,585.25 = 3,961.78 : x
  2. Step 2: Convert to fraction form
    6,945.90/9,585.25 = 3,961.78/x
  3. Step 3: Cross multiply
    6,945.90x = 9,585.25 × 3,961.78
  4. Step 4: Simplify right side
    6,945.90x = 37,974,671.79
  5. Step 5: Solve for x
    x = 37,974,671.79/6,945.90
  6. Step 6: Final answer
    x = 5,467.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.