Home / 2,265.78-3,122.26-1,635.20

Finding the Fourth Proportional to 2,265.78, 3,122.26 and 1,635.20

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Solution

The fourth proportional to 2,265.78, 3,122.26 and 1,635.20 is: 2,253.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.78 : 3,122.26 = 1,635.20 : x
  2. Step 2: Convert to fraction form
    2,265.78/3,122.26 = 1,635.20/x
  3. Step 3: Cross multiply
    2,265.78x = 3,122.26 × 1,635.20
  4. Step 4: Simplify right side
    2,265.78x = 5,105,519.55
  5. Step 5: Solve for x
    x = 5,105,519.55/2,265.78
  6. Step 6: Final answer
    x = 2,253.32

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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.