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Finding the Fourth Proportional to 2,699.57, 3,725.39 and 1,520.64

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Solution

The fourth proportional to 2,699.57, 3,725.39 and 1,520.64 is: 2,098.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.57 : 3,725.39 = 1,520.64 : x
  2. Step 2: Convert to fraction form
    2,699.57/3,725.39 = 1,520.64/x
  3. Step 3: Cross multiply
    2,699.57x = 3,725.39 × 1,520.64
  4. Step 4: Simplify right side
    2,699.57x = 5,664,977.05
  5. Step 5: Solve for x
    x = 5,664,977.05/2,699.57
  6. Step 6: Final answer
    x = 2,098.47

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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.