Home / 3,111.52-4,293.99-1,785.64

Finding the Fourth Proportional to 3,111.52, 4,293.99 and 1,785.64

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Solution

The fourth proportional to 3,111.52, 4,293.99 and 1,785.64 is: 2,464.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.52 : 4,293.99 = 1,785.64 : x
  2. Step 2: Convert to fraction form
    3,111.52/4,293.99 = 1,785.64/x
  3. Step 3: Cross multiply
    3,111.52x = 4,293.99 × 1,785.64
  4. Step 4: Simplify right side
    3,111.52x = 7,667,520.30
  5. Step 5: Solve for x
    x = 7,667,520.30/3,111.52
  6. Step 6: Final answer
    x = 2,464.24

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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.