Home / 5,150.38-7,725.64-1,687.62

Finding the Fourth Proportional to 5,150.38, 7,725.64 and 1,687.62

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Solution

The fourth proportional to 5,150.38, 7,725.64 and 1,687.62 is: 2,531.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,150.38 : 7,725.64 = 1,687.62 : x
  2. Step 2: Convert to fraction form
    5,150.38/7,725.64 = 1,687.62/x
  3. Step 3: Cross multiply
    5,150.38x = 7,725.64 × 1,687.62
  4. Step 4: Simplify right side
    5,150.38x = 13,037,944.58
  5. Step 5: Solve for x
    x = 13,037,944.58/5,150.38
  6. Step 6: Final answer
    x = 2,531.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.