Home / 2,742.88-3,784.90-1,623.60

Finding the Fourth Proportional to 2,742.88, 3,784.90 and 1,623.60

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Solution

The fourth proportional to 2,742.88, 3,784.90 and 1,623.60 is: 2,240.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.88 : 3,784.90 = 1,623.60 : x
  2. Step 2: Convert to fraction form
    2,742.88/3,784.90 = 1,623.60/x
  3. Step 3: Cross multiply
    2,742.88x = 3,784.90 × 1,623.60
  4. Step 4: Simplify right side
    2,742.88x = 6,145,163.64
  5. Step 5: Solve for x
    x = 6,145,163.64/2,742.88
  6. Step 6: Final answer
    x = 2,240.41

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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.