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Finding the Fourth Proportional to 1,685, 2,516.44 and 1,454.36

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Solution

The fourth proportional to 1,685, 2,516.44 and 1,454.36 is: 2,171.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685 : 2,516.44 = 1,454.36 : x
  2. Step 2: Convert to fraction form
    1,685/2,516.44 = 1,454.36/x
  3. Step 3: Cross multiply
    1,685x = 2,516.44 × 1,454.36
  4. Step 4: Simplify right side
    1,685x = 3,659,809.68
  5. Step 5: Solve for x
    x = 3,659,809.68/1,685
  6. Step 6: Final answer
    x = 2,171.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.