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Finding the Fourth Proportional to 6,640.89, 9,955.07 and 3,305.99

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Solution

The fourth proportional to 6,640.89, 9,955.07 and 3,305.99 is: 4,955.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.89 : 9,955.07 = 3,305.99 : x
  2. Step 2: Convert to fraction form
    6,640.89/9,955.07 = 3,305.99/x
  3. Step 3: Cross multiply
    6,640.89x = 9,955.07 × 3,305.99
  4. Step 4: Simplify right side
    6,640.89x = 32,911,319.60
  5. Step 5: Solve for x
    x = 32,911,319.60/6,640.89
  6. Step 6: Final answer
    x = 4,955.86

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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.