Home / 2,687.35-3,706.72-2,190.01

Finding the Fourth Proportional to 2,687.35, 3,706.72 and 2,190.01

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Solution

The fourth proportional to 2,687.35, 3,706.72 and 2,190.01 is: 3,020.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.35 : 3,706.72 = 2,190.01 : x
  2. Step 2: Convert to fraction form
    2,687.35/3,706.72 = 2,190.01/x
  3. Step 3: Cross multiply
    2,687.35x = 3,706.72 × 2,190.01
  4. Step 4: Simplify right side
    2,687.35x = 8,117,753.87
  5. Step 5: Solve for x
    x = 8,117,753.87/2,687.35
  6. Step 6: Final answer
    x = 3,020.73

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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.