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Finding the Fourth Proportional to 6,641.75, 9,165.56 and 3,954.81

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Solution

The fourth proportional to 6,641.75, 9,165.56 and 3,954.81 is: 5,457.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.75 : 9,165.56 = 3,954.81 : x
  2. Step 2: Convert to fraction form
    6,641.75/9,165.56 = 3,954.81/x
  3. Step 3: Cross multiply
    6,641.75x = 9,165.56 × 3,954.81
  4. Step 4: Simplify right side
    6,641.75x = 36,248,048.34
  5. Step 5: Solve for x
    x = 36,248,048.34/6,641.75
  6. Step 6: Final answer
    x = 5,457.61

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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.