Home / 2,176.40-3,256.52-1,299.40

Finding the Fourth Proportional to 2,176.40, 3,256.52 and 1,299.40

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Solution

The fourth proportional to 2,176.40, 3,256.52 and 1,299.40 is: 1,944.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.40 : 3,256.52 = 1,299.40 : x
  2. Step 2: Convert to fraction form
    2,176.40/3,256.52 = 1,299.40/x
  3. Step 3: Cross multiply
    2,176.40x = 3,256.52 × 1,299.40
  4. Step 4: Simplify right side
    2,176.40x = 4,231,507.45
  5. Step 5: Solve for x
    x = 4,231,507.45/2,176.40
  6. Step 6: Final answer
    x = 1,944.27

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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.