Home / 4,425.77-6,640.18-2,780.39

Finding the Fourth Proportional to 4,425.77, 6,640.18 and 2,780.39

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Solution

The fourth proportional to 4,425.77, 6,640.18 and 2,780.39 is: 4,171.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,425.77 : 6,640.18 = 2,780.39 : x
  2. Step 2: Convert to fraction form
    4,425.77/6,640.18 = 2,780.39/x
  3. Step 3: Cross multiply
    4,425.77x = 6,640.18 × 2,780.39
  4. Step 4: Simplify right side
    4,425.77x = 18,462,299.72
  5. Step 5: Solve for x
    x = 18,462,299.72/4,425.77
  6. Step 6: Final answer
    x = 4,171.54

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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.