Home / 2,528.68-3,489.30-1,409.38

Finding the Fourth Proportional to 2,528.68, 3,489.30 and 1,409.38

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Solution

The fourth proportional to 2,528.68, 3,489.30 and 1,409.38 is: 1,944.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528.68 : 3,489.30 = 1,409.38 : x
  2. Step 2: Convert to fraction form
    2,528.68/3,489.30 = 1,409.38/x
  3. Step 3: Cross multiply
    2,528.68x = 3,489.30 × 1,409.38
  4. Step 4: Simplify right side
    2,528.68x = 4,917,749.63
  5. Step 5: Solve for x
    x = 4,917,749.63/2,528.68
  6. Step 6: Final answer
    x = 1,944.79

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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.