Home / 2,540.20-3,497.70-1,911.64

Finding the Fourth Proportional to 2,540.20, 3,497.70 and 1,911.64

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Solution

The fourth proportional to 2,540.20, 3,497.70 and 1,911.64 is: 2,632.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.20 : 3,497.70 = 1,911.64 : x
  2. Step 2: Convert to fraction form
    2,540.20/3,497.70 = 1,911.64/x
  3. Step 3: Cross multiply
    2,540.20x = 3,497.70 × 1,911.64
  4. Step 4: Simplify right side
    2,540.20x = 6,686,343.23
  5. Step 5: Solve for x
    x = 6,686,343.23/2,540.20
  6. Step 6: Final answer
    x = 2,632.21

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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.