Home / 2,581.40-3,561-1,635.60

Finding the Fourth Proportional to 2,581.40, 3,561 and 1,635.60

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Solution

The fourth proportional to 2,581.40, 3,561 and 1,635.60 is: 2,256.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.40 : 3,561 = 1,635.60 : x
  2. Step 2: Convert to fraction form
    2,581.40/3,561 = 1,635.60/x
  3. Step 3: Cross multiply
    2,581.40x = 3,561 × 1,635.60
  4. Step 4: Simplify right side
    2,581.40x = 5,824,371.60
  5. Step 5: Solve for x
    x = 5,824,371.60/2,581.40
  6. Step 6: Final answer
    x = 2,256.28

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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.