Home / 2,742.88-3,784.95-1,563.73

Finding the Fourth Proportional to 2,742.88, 3,784.95 and 1,563.73

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Solution

The fourth proportional to 2,742.88, 3,784.95 and 1,563.73 is: 2,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.88 : 3,784.95 = 1,563.73 : x
  2. Step 2: Convert to fraction form
    2,742.88/3,784.95 = 1,563.73/x
  3. Step 3: Cross multiply
    2,742.88x = 3,784.95 × 1,563.73
  4. Step 4: Simplify right side
    2,742.88x = 5,918,639.86
  5. Step 5: Solve for x
    x = 5,918,639.86/2,742.88
  6. Step 6: Final answer
    x = 2,157.82

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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.