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Finding the Fourth Proportional to 6,847.75, 9,445.03 and 6,619.13

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Solution

The fourth proportional to 6,847.75, 9,445.03 and 6,619.13 is: 9,129.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,847.75 : 9,445.03 = 6,619.13 : x
  2. Step 2: Convert to fraction form
    6,847.75/9,445.03 = 6,619.13/x
  3. Step 3: Cross multiply
    6,847.75x = 9,445.03 × 6,619.13
  4. Step 4: Simplify right side
    6,847.75x = 62,517,817.65
  5. Step 5: Solve for x
    x = 62,517,817.65/6,847.75
  6. Step 6: Final answer
    x = 9,129.69

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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.