Home / 3,146.96-4,342.55-1,820.75

Finding the Fourth Proportional to 3,146.96, 4,342.55 and 1,820.75

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Solution

The fourth proportional to 3,146.96, 4,342.55 and 1,820.75 is: 2,512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.96 : 4,342.55 = 1,820.75 : x
  2. Step 2: Convert to fraction form
    3,146.96/4,342.55 = 1,820.75/x
  3. Step 3: Cross multiply
    3,146.96x = 4,342.55 × 1,820.75
  4. Step 4: Simplify right side
    3,146.96x = 7,906,667.10
  5. Step 5: Solve for x
    x = 7,906,667.10/3,146.96
  6. Step 6: Final answer
    x = 2,512.48

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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.