Home / 2,743.12-3,784.24-1,680.56

Finding the Fourth Proportional to 2,743.12, 3,784.24 and 1,680.56

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Solution

The fourth proportional to 2,743.12, 3,784.24 and 1,680.56 is: 2,318.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,743.12 : 3,784.24 = 1,680.56 : x
  2. Step 2: Convert to fraction form
    2,743.12/3,784.24 = 1,680.56/x
  3. Step 3: Cross multiply
    2,743.12x = 3,784.24 × 1,680.56
  4. Step 4: Simplify right side
    2,743.12x = 6,359,642.37
  5. Step 5: Solve for x
    x = 6,359,642.37/2,743.12
  6. Step 6: Final answer
    x = 2,318.40

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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.