Home / 2,780.39-4,165.85-2,429.87

Finding the Fourth Proportional to 2,780.39, 4,165.85 and 2,429.87

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Solution

The fourth proportional to 2,780.39, 4,165.85 and 2,429.87 is: 3,640.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.39 : 4,165.85 = 2,429.87 : x
  2. Step 2: Convert to fraction form
    2,780.39/4,165.85 = 2,429.87/x
  3. Step 3: Cross multiply
    2,780.39x = 4,165.85 × 2,429.87
  4. Step 4: Simplify right side
    2,780.39x = 10,122,440.96
  5. Step 5: Solve for x
    x = 10,122,440.96/2,780.39
  6. Step 6: Final answer
    x = 3,640.66

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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.