Home / 4,190.78-5,780.62-2,700.65

Finding the Fourth Proportional to 4,190.78, 5,780.62 and 2,700.65

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Solution

The fourth proportional to 4,190.78, 5,780.62 and 2,700.65 is: 3,725.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190.78 : 5,780.62 = 2,700.65 : x
  2. Step 2: Convert to fraction form
    4,190.78/5,780.62 = 2,700.65/x
  3. Step 3: Cross multiply
    4,190.78x = 5,780.62 × 2,700.65
  4. Step 4: Simplify right side
    4,190.78x = 15,611,431.40
  5. Step 5: Solve for x
    x = 15,611,431.40/4,190.78
  6. Step 6: Final answer
    x = 3,725.19

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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.