Home / 3,171.12-4,778.34-2,606.64

Finding the Fourth Proportional to 3,171.12, 4,778.34 and 2,606.64

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Solution

The fourth proportional to 3,171.12, 4,778.34 and 2,606.64 is: 3,927.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.12 : 4,778.34 = 2,606.64 : x
  2. Step 2: Convert to fraction form
    3,171.12/4,778.34 = 2,606.64/x
  3. Step 3: Cross multiply
    3,171.12x = 4,778.34 × 2,606.64
  4. Step 4: Simplify right side
    3,171.12x = 12,455,412.18
  5. Step 5: Solve for x
    x = 12,455,412.18/3,171.12
  6. Step 6: Final answer
    x = 3,927.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.