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Finding the Fourth Proportional to 6,899.65, 9,521.51 and 3,755.83

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Solution

The fourth proportional to 6,899.65, 9,521.51 and 3,755.83 is: 5,183.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899.65 : 9,521.51 = 3,755.83 : x
  2. Step 2: Convert to fraction form
    6,899.65/9,521.51 = 3,755.83/x
  3. Step 3: Cross multiply
    6,899.65x = 9,521.51 × 3,755.83
  4. Step 4: Simplify right side
    6,899.65x = 35,761,172.90
  5. Step 5: Solve for x
    x = 35,761,172.90/6,899.65
  6. Step 6: Final answer
    x = 5,183.04

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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.