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Finding the Fourth Proportional to 5,662.81, 7,815.17 and 3,305.71

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Solution

The fourth proportional to 5,662.81, 7,815.17 and 3,305.71 is: 4,562.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,662.81 : 7,815.17 = 3,305.71 : x
  2. Step 2: Convert to fraction form
    5,662.81/7,815.17 = 3,305.71/x
  3. Step 3: Cross multiply
    5,662.81x = 7,815.17 × 3,305.71
  4. Step 4: Simplify right side
    5,662.81x = 25,834,685.62
  5. Step 5: Solve for x
    x = 25,834,685.62/5,662.81
  6. Step 6: Final answer
    x = 4,562.17

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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.