Home / 2,528.68-3,487.62-1,687.88

Finding the Fourth Proportional to 2,528.68, 3,487.62 and 1,687.88

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Solution

The fourth proportional to 2,528.68, 3,487.62 and 1,687.88 is: 2,327.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528.68 : 3,487.62 = 1,687.88 : x
  2. Step 2: Convert to fraction form
    2,528.68/3,487.62 = 1,687.88/x
  3. Step 3: Cross multiply
    2,528.68x = 3,487.62 × 1,687.88
  4. Step 4: Simplify right side
    2,528.68x = 5,886,684.05
  5. Step 5: Solve for x
    x = 5,886,684.05/2,528.68
  6. Step 6: Final answer
    x = 2,327.97

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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.