Home / 2,740.70-4,115.10-2,125.10

Finding the Fourth Proportional to 2,740.70, 4,115.10 and 2,125.10

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Solution

The fourth proportional to 2,740.70, 4,115.10 and 2,125.10 is: 3,190.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.70 : 4,115.10 = 2,125.10 : x
  2. Step 2: Convert to fraction form
    2,740.70/4,115.10 = 2,125.10/x
  3. Step 3: Cross multiply
    2,740.70x = 4,115.10 × 2,125.10
  4. Step 4: Simplify right side
    2,740.70x = 8,744,999.01
  5. Step 5: Solve for x
    x = 8,744,999.01/2,740.70
  6. Step 6: Final answer
    x = 3,190.79

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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.